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The Evolution of ERP Systems: A Historical Perspective 1

Chapter I

The Evolution of ERP
Systems: A Historical
Perspective
Mohammad A. Rashid
Massey University–Albany, New Zealand
Liaquat Hossain
Syracuse University, USA
Jon David Patrick
University of Sydney, Australia

ERP systems are now ubiquitous in large businesses and the current move by
vendors is to repackage them for small to medium enterprises (SMEs). This
migration has many consequences that have to be addressed through understanding the history and evolution of ERP systems and their current architectures. The
advantages and disadvantages of the ERP systems will impact their penetration
in this new market. The market position and general strategy of the major systems
providers in preparation for this push are described. The chapter concludes that
the growth and success of ERP adoption and development in the new millennium
will depend on the legacy ERP system’s capability of extending to Customer
Relationship Management (CRM), Supply Chain Management (SCM) and other
extended modules, and integration with the Internet-enabled applications.

INTRODUCTION
The unprecedented growth of information and communication technologies (ICT) driven by microelectronics, computer hardware and software
systems has influenced all facets of computing applications across organizaCopyright © 2002, Idea Group Publishing.
2 Rashid, Hossain & Patrick

tions. Simultaneously the business environment is becoming increasingly
complex with functional units requiring more and more inter-functional data
flow for decision making, timely and efficient procurement of product parts,
management of inventory, accounting, human resources and distribution of
goods and services. In this context, management of organizations needs
efficient information systems to improve competitiveness by cost reduction
and better logistics. It is universally recognized by large and small-tomedium-size enterprises (SME) that the capability of providing the right
information at the right time brings tremendous rewards to organizations in
a global competitive world of complex business practices.
Starting in the late 1980s and the beginning of the 1990s new software
systems known in the industry as enterprise resource planning (ERP) systems
have surfaced in the market targeting mainly large complex business organizations. These complex, expensive, powerful, proprietary systems are offthe-shelf solutions requiring consultants to tailor and implement them based
on the company’s requirements. In many cases they force companies to
reengineer their business processes to accommodate the logic of the software
modules for streamlining data flow throughout the organization. These
software solutions, unlike the old, traditional in-house-designed companyspecific systems, are integrated multi-module commercial packages suitable
for tailoring and adding “add-ons” as and when required.
The phenomenal growth of computing power and the Internet is bringing
ever more challenges for the ERP vendors and the customers to redesign ERP
products, breaking the barrier of proprietorship and customization, and
embracing the collaborative business over the intranet, extranet and the
Internet in a seamless manner. The vendors already promise many “add-on”
modules, some of which are already in the market as a sign of acceptance of
these challenges by the ERP vendors. It is a never-ending process of
reengineering and development bringing new products and solutions to the
ERP market. ERP vendors and customers have recognized the need for
packages that follow open architecture, provide interchangeable modules and
allow easy customization and user interfacing.

ERP SYSTEMS DEFINED
Enterprise resource planning systems or enterprise systems are software
systems for business management, encompassing modules supporting functional areas such as planning, manufacturing, sales, marketing, distribution,
accounting, financial, human resource management, project management,
inventory management, service and maintenance, transportation and e-busi-
The Evolution of ERP Systems: A Historical Perspective 3

ness. The architecture of the software facilitates transparent integration of
modules, providing flow of information between all functions within the enterprise in a consistently visible manner. Corporate computing with ERPs allows
companies to implement a single integrated system by replacing or re-engineering
their mostly incompatible legacy information systems. American Production and
Inventory Control Society (2001) has defined ERP systems as “a method for the
effective planning and controlling of all the resources needed to take, make, ship
and account for customer orders in a manufacturing, distribution or service
company.” We quote several definitions from the published literature to further
explain the concept: “ERP (enterprise resource planning systems) comprises of
a commercial software package that promises the seamless integration of all the
information flowing through the company–financial, accounting, human resources, supply chain and customer information” (Davenport, 1998). “ERP
systems are configurable information systems packages that integrate information and information-based processes within and across functional areas in an
organization” (Kumar & Van Hillsgersberg, 2000). “One database, one application and a unified interface across the entire enterprise” (Tadjer, 1998). “ERP
systems are computer-based systems designed to process an organization’s
transactions and facilitate integrated and real-time planning, production, and
customer response” (O’Leary, 2001). The concept of the ERP system can be
illustrated, following Davenport (1998), with the diagram in Figure 1.

EVOLUTION OF ERP SYSTEMS
The evolution of ERP systems closely followed the spectacular developments in the field of computer hardware and software systems. During the
Figure 1: ERP systems concept
Front-Office

C
U
S
T
O
M
E
R
S

Corporate Reporting

Back-Office
Financial
Applications

Sales &
Distribution
Service
Applications

Central
Database

Manufacturing
Applications
Inventory
Management

Human Resources
Management

S
U
P
P
L
I
E
R
S
4 Rashid, Hossain & Patrick

1960s most organizations designed, developed and implemented centralized
computing systems, mostly automating their inventory control systems using
inventory control packages (IC). These were legacy systems based on programming languages such as COBOL, ALGOL and FORTRAN. Material
requirements planning (MRP) systems were developed in the 1970s which
involved mainly planning the product or parts requirements according to the
master production schedule. Following this route new software systems
called manufacturing resources planning (MRP II) were introduced in the
1980s with an emphasis on optimizing manufacturing processes by synchronizing the materials with production requirements. MRP II included areas
such as shop floor and distribution management, project management,
finance, human resource and engineering. ERP systems first appeared in the
late 1980s and the beginning of the 1990s with the power of enterprise-wide
inter-functional coordination and integration. Based on the technological
foundations of MRP and MRP II, ERP systems integrate business processes
including manufacturing, distribution, accounting, financial, human resource
management, project management, inventory management, service and maintenance, and transportation, providing accessibility, visibility and consistency across the enterprise.
During the 1990s ERP vendors added more modules and functions as
“add-ons” to the core modules giving birth to the “extended ERPs.” These
ERP extensions include advanced planning and scheduling (APS), e-business
solutions such as customer relationship management (CRM) and supply
chain management (SCM). Figure 2 summarizes the historical events related
with ERP.

Figure 2: ERP evolution
2000s

Extended ERP

1990s
1980s

Enterprise Resource Planning
(ERP)
Manufacturing Resources Planning (MRP II)

1970s

Material Requirements Planning (MRP)

1960s

Inventory Control Packages
The Evolution of ERP Systems: A Historical Perspective 5

ERP SYSTEMS AND ORGANIZATIONS
It is generally a misleading perception that implementing an ERP system
will improve organizations’ functionalities overnight. The high expectation
of achieving all-round cost savings and service improvements is very much
dependent on how good the chosen ERP system fits to the organizational
functionalities and how well the tailoring and configuration process of the
system matched with the business culture, strategy and structure of the
organization. Overall an ERP system is expected to improve both backbone
and front-end functions simultaneously. Organizations choose and deploy
ERP systems for many tangible and intangible benefits and strategic reasons.
In many cases the calculation of return on investment (ROI) is weighted
against the many intangible and strategic benefits. The benefits that an
industry standard ERP system may bring to organizations are shown in Table 1.
To reap the benefits of ERP systems, however, organizations need to overcome certain problems and disadvantages, which are listed in Table 2.
It was estimated that the spending on ERP systems in 1998 was about
US$17 billion following annual growth rates ranging from 30% to 50%.
Companies also spend a multiple of licensing costs on services related to
implementation and maintenance of the software. The worldwide license and
maintenance revenue for ERP systems was US$21.5 billion in 2000, which
represented a growth of 13.1% from the 1999 market value of $US19 billion
(Broatch, 2001). The continued growth of the ERP systems market is
Table 1: Advantages of ERP systems
What benefit
Reliable information access
Avoid data and operations redundancy

Delivery and cycle time reduction
Cost reduction

Easy adaptability
Improved scalability
Improved maintenance
Global outreach
E-Commerce, e-business

How
Common DBMS, consistent and accurate
data, improved reports.
Modules access same data from the central
database, avoids multiple data input and
update operations.
Minimizes retrieving and reporting delays.
Time savings, improved control by
enterprise-wide analysis of organizational
decisions.
Changes in business processes easy to
adapt and restructure.
Structured and modular design with “addons.”
Vendor-supported long-term contract as
part of the system procurement.
Extended modules such as CRM and SCM.
Internet commerce, collaborative culture.
6 Rashid, Hossain & Patrick

Table 2: Disadvantages of ERP systems
Disadvantage
Time-consuming
Expensive

Conformity of the modules

Vendor dependence

Features and complexity

Scalability and global outreach

Extended ERP capability

How to overcome

Minimize sensitive issues, internal politics
and raise general consensus.
Cost may vary from thousands of dollars to
millions. Business process reengineering
cost may be extremely high.
The architecture and components of the
selected system should conform to the
business processes, culture and strategic
goals of the organization.
Single
vendor
vs.
multi-vendor
consideration, options for “best of breeds,”
long-term committed support.
ERP system may have too many features
and modules so the user needs to consider
carefully and implement the needful only.
Look for vendor investment in R&D, longterm commitment to product and services,
consider Internet-enabled systems.
Consider middle-ware “add-on” facilities
and extended modules such as CRM and
SCM.

attributed to the fact that the vendors are adding applications such as supply
chain management, customer relationship management and the integration of
Internet-enabled applications for e-business.
More than 60% of the Fortune 1000 companies have installed or are
in the process of implementing packaged ERP systems to support their
back-end business activities (Kraft, 2001). These packages implemented
by the Fortune 1000 companies run well over the IT budgets for most
SMEs. ERP vendors are targeting this untapped SME market with supposedly scaled-back systems suitable for smaller firms by offering simple,
cheaper and pre-configured easy-to-install solutions within budget and
time constraints. For some vendors this may lead to offering centrally
managed Internet-enabled ERP-system-based services for SMEs to access and use anytime from anywhere.

ERP SYSTEMS ARCHITECTURE
ERP vendors, mostly experienced from the MRP and financial software
services fields, realized the limitations of the old legacy information systems
The Evolution of ERP Systems: A Historical Perspective 7

used in large enterprises of the 1970s and 1980s. Some of these old systems
were developed in-house while others were developed by different vendors
using several different database management systems, languages and packages, creating islands of noncompatible solutions unfit for seamless data flow
between them. It was difficult to increase the capacity of such systems or the
users were unable to upgrade them with the organization’s business changes,
strategic goals and new information technologies.
An ERP system is required to have the following characteristics:
•
Modular design comprising many distinct business modules such as
financial, manufacturing, accounting, distribution, etc.
•
Use centralized common database management system (DBMS)
•
The modules are integrated and provide seamless data flow among the
modules, increasing operational transparency through standard interfaces
•
They are generally complex systems involving high cost
•
They are flexible and offer best business practices
•
They require time-consuming tailoring and configuration setups for
integrating with the company’s business functions
•
The modules work in real time with online and batch processing
capabilities
•
They are or soon they will be Internet-enabled
Different ERP vendors provide ERP systems with some degree of
specialty but the core modules are almost the same for all of them. Some of
the core ERP modules found in the successful ERP systems are the following:
•
Accounting management
•
Financial management
•
Manufacturing management
•
Production management
•
Transportation management
•
Sales & distribution management
•
Human resources management
•
Supply chain management
•
Customer relationship management
•
E-Business
The modules of an ERP system can either work as stand-alone units or
several modules can be combined together to form an integrated system. The
systems are usually designed to operate under several operating platforms
such as UNIX, MS Windows NT, Windows 2000, IBM AIX, and HP-UX
systems. SAP AG, the largest ERP vendor, provides a number of modules
with its famous R/3 ERP system, which are shown in Table 3. New modules
are introduced by SAP and other vendors in response to the market and
technological demand such as the Internet technology.
8 Rashid, Hossain & Patrick

Table 3: Some of the modules of SAP’s R/3
Financial Accounting
Project System
Human Resources
Production Planning
Investment Management

FI
PS
HR
PP
IM

Controlling
Workflow
Plant Maintenance
Materials Management
Enterprise Controlling

CO
WF
PM
MM
EC

Modules of Internet version mySAP.COM
mySAP Workplace
mySAP E-Procurement
mySAP Supply Chain Mgmt.
mySAP Product Lifecycle Mgmt.
mySAP Customer Relationship
mySAP Business Intelligence
Mgmt.
mySAP Mobile Business
mySAP Financials

Asset Management
Industry Solutions
Quality Management
Sales & Distribution
Treasury

AM
IS
QM
SD
TR

mySAP Human Resources
mySAP Marketplace by
SAPMarkets
mySAP Hosted Solutions
mySAP Technology

Enterprise systems employ thin client/server (C/S) technology or client/
fat server (C/FS) architecture, creating a decentralized computing environment. In a C/S system a number of client devices operated by end users such
as desktop PCs request services from application servers, which in turn get the
requested service-related information from the database servers. The requests
may be simple data files, data values, communication services, transaction
processing or master file updates. The general practice is to have three-tier
architecture such as in Figure 3. In this three-tier system the user interface runs
on the client. To run ERP systems relatively powerful PCs (clients) and
powerful servers are required where most of the hundreds of thousands of
operations are performed. The client/server system functions are performed
following three layers of logic:
•
Presentation Layer: Graphical user interface (GUI) or browser for data
entry or accessing system functions
•
Application Layer: Business rules, functions, logic, and programs
acting on data received/transferred from/to the database servers
•
Database Layer: Management of the organization’s operational or
transactional data including metadata; mostly employs industry standard
RDBMS with structured query language (SQL) provisions
This logical arrangement helps the ERP user interface to run on the
clients, the processing modules to run on the middle-tier application servers,
and the database system to run on the database servers.

COMMERCIAL ERP SYSTEMS
The five dominating ERP software suppliers are SAP, Oracle, PeopleSoft,
Baan and J.D. Edwards. Together they control more than 60% of the multibillion dollar global market.
The Evolution of ERP Systems: A Historical Perspective 9

Figure 3: Three-tier ERP systems architecture
Presentation
Layer
(Front Tier)

Application Layer
(Middle Tier)

Client
Workstations

Application
Servers

Database Layer
(Back Tier)
Database Servers
Each vendor, due to historic reasons, has a specialty in one particular
module area such as Baan in manufacturing, PeopleSoft in human resources
management, SAP in logistics and Oracle in financials. There are also about
50 established and a few more newly emerging smaller and midsize ERP
vendors including third-party developers competing for the ERP market. The
result is stiff competition and feature-overlapping products difficult to
differentiate. Due to keen competition for control of the lucrative ERP market
share, the vendors are continuously updating their products and adding new
technology-based features. Long-term vision, commitment to service and
support, module features, specialty, experience and financial strength for
R&D are considered the major vendor qualities for product selection and
turnkey implementation. In the following sections we provide brief profiles
of these five ERP giants.

SAP AG–Flagship Products R/3, mySAP.COM
SAP AG (“Systeme, Anwendungen, und Produkte in Datenverarbeitung”),
or Systems, Applications and Products in Data Processing, was started by five
former IBM engineers in Germany in 1972 for producing integrated business
application software for the manufacturing enterprise (SAP, 2001). Its first
ERP product, R/2, was launched in 1979 using a mainframe-based centralized
database that was then redesigned as client/server software R/3 in 1992.
System R/3 was a breakthrough and by 1999 SAP AG became the third largest
software vendor in the world and the largest in the ERP sector with a market
10 Rashid, Hossain & Patrick

share of about 36% serving over 17,000 customers in over 100 countries. In
1999 SAP AG extended the ERP functions by adding CRM, SCM, sales-force
automation and data warehousing. SAP has also invested significantly in its
R&D sector with the result of newer versions of R/3 3.1, 4.0, 4.6 including
Internet functionalities and other enhancements. SAP’s Internet-enabled ERP
solutions are provided by the recently launched ERP product called
mySAP.COM. SAP has the broadest ERP functionality, capacity to spend
significantly on R&D, strong industry-focused solutions and long-term vision.

Oracle Corporation–Flagship Product Oracle Applications
Oracle (Oracle, 2001), founded in 1977 in the USA, is best-known for its
database software and related applications and is the second largest software
company in the world after Microsoft. Oracle’s enterprise software applications started to work with its database in 1987. It accounts for $2.5 billion out
of the company’s $9.3 billion in 1999, which places Oracle second to SAP in
the enterprise systems category with over 5,000 customers in 140 countries.
Oracles ERP system is known as Oracle Applications, having more than 50
different modules in six major categories: finance, accounts payable, human
resources, manufacturing, supply chain, projects and front office. Oracle has
other strong products in the software field including DBMS, data warehousing, work flow, systems administration, application development tools (APIs),
and consulting services. A notable feature of Oracle is that it is both a
competitor and a partner to some of the industry leaders in the ERP market
such as SAP, Baan and PeopleSoft because of the use of Oracle’s DBMS in
their ERP systems.
Oracle has integrated its ERP solutions with the Internet and has
introduced several applications in the electronic commerce and Internetbased commerce areas. Oracle’s Internet infrastructure is created around two
powerful products: Oracle9i Database and Oracle9i Application Server.
Another significant feature of Oracle is its OSBS, or Oracle Small Business
Suite which provides consistent financials, payroll, inventory control, order
entry, purchase orders, and CRM functionality–all delivered as a Web
service. Oracle also offers an easy-to-activate Web presence that helps
companies to sell their goods via the Internet.

PeopleSoft Inc.–Flagship Product PeopleSoft8
PeopleSoft is one of the newest ERP software firms started in 1987 in
Pleasanton, California, with specialization in human resource management
and financial services modules. PeopleSoft quickly managed to offer other
corporate functions and attained a revenue of $32 million in 1992. Enterprise
The Evolution of ERP Systems: A Historical Perspective 11

solutions from PeopleSoft include modules for manufacturing, materials
management, distribution, finance, human resources and supply chain planning. SAP AG and Oracle–with longer experience, stronger financial base
and worldwide presence–are the main competitors to PeopleSoft. Many
customers comment that PeopleSoft has a culture of collaboration with
customers, which makes it more flexible than its competitors. One of the
strengths of PeopleSoft is the recognition by its customers that it is flexible
and collaborative. The flagship application PeopleSoft8 with scores of
applications was developed by PeopleSoft with an expenditure of $500
million and 2,000 developers over 2 years as a pure Internet-based collaborative enterprise system. “Our revolutionary eBusiness platform is the first
open XML platform to offer scalability and ease of use for all users.
PeopleSoft 8 requires no client software other than a standard Web browser,
giving you the ability to securely run your business anytime, anywhere”
(PeopleSoft, 2001). “Our eBusiness applications and consulting services
enable true global operations–managing multiple currencies, languages, and
business processes for more than 4,400 organizations in 109 countries”
(PeopleSoft, 2001). PeopleSoft with about 10% market share, is the third
largest ERP vendor after SAP AG and Oracle.

The Baan Company–Flagship Product BaanERP
Founded in 1978 in The Netherlands, Baan (Baan, 2001) started with
expertise in software for the manufacturing industry and by 1997 claimed an
ERP market share of roughly 5%. Bann’s revenue in 1998 was roughly $750
million and while facing a slight slowdown in 1999 started growing again in
2001 with sales up 12% at £7,231million and operating profit of £926 million.
Baan has more than 15,000 customer sites all over the world and more than
3,000 employees. Baan believes that “the Internet is the ultimate enabler” and
“Internet technologies help companies become order-driven and customerfocused by enabling collaboration across the ‘value chain.’ Suppliers, distributors, manufacturers and customers can work together to deliver the right
product at the right price.” ERP solution areas that Baan covers include
finance, procurement, manufacturing, distribution, integration and implementation, planning, sales, service and maintenance, business portals, collaborative commerce and business intelligence. Bann’s flagship product is
BaanERP (formerly called Triton, then Baan IV), launched in 1998. One
innovative product from Baan is the Orgware tool that can cut implementation
cost significantly by automatically configuring the enterprise software. Baan’s
ERP software is best known in the aerospace, automotive, defence, and
electronics industries.
12 Rashid, Hossain & Patrick

J.D. Edwards & Co.–Flagship Product OneWorld
J.D. Edwards was founded in 1977 in Denver (cofounded by Jack
Thompson, Dan Gregory and C. Edward McVaney) with long experience of
supplying software for the AS/400 market. J.D. Edwards’ flagship ERP
product called OneWorld is “capable of running on multiple platforms and
with multiple databases, ... [and] revolutionizes enterprise software by
liberating users from inflexible, static technologies” (JD Edwards, 2001). The
product includes modules for finance, manufacturing, distribution/logistics
and human resources, quality management, maintenance management, data
warehousing, customer support and after-sales service. J.D. Edwards’ revenue jumped to $944 million in 1999 from $120 million in1992, having more
than 5,000 customers in over 100 countries. The OneWorld system is
considered to be more flexible than similar competing products and within the
reach of smaller enterprises. J.D. Edwards’ Internet-extended version of
OneWorld was launched recently as OneWorld Xe (“Xe” stands for “extended enterprise”).

EXTENDED ERP
The proliferation of the Internet has shown tremendous impact on every
aspect of the IT sector including ERP systems becoming more and more
“Internet-enabled” (Lawton, 2000). This environment of accessing systems
resources from anywhere anytime has helped ERP vendors extend their
legacy ERP systems to integrate with newer external business modules such
as supply chain management, customer relationship management, sales force
automation (SFA), advanced planning and scheduling (APS), business intelligence (BI), and e-business capabilities. In fact ERP is becoming the ebusiness backbone for organizations doing online business transactions over
the Internet. Internet-based solutions are destined to improve customer
satisfaction, increase marketing and sales opportunities, expand distribution
channels, and provide more cost-effective billing and payment methods. The
extension to SCM and CRM enables effective tri-party business relationships
between the organization, suppliers and the customers. A supply chain
management has sub-modules for procurement of materials, transformation
of the materials into products and distribution of products to customers.
“Successful supply chain management allows an enterprise to anticipate
demand and deliver the right product to the right place at the right time at the
lowest possible cost to satisfy its customers. Dramatic savings can be
achieved in inventory reduction, transportation costs and reduced spoilage by
The Evolution of ERP Systems: A Historical Perspective 13

matching supply with actual demand” (IBM, 2001). With the deployment
of a CRM, organizations are able to gather knowledge about their customers, opening opportunities to assess customer needs, values and costs
throughout the business life cycle for better understanding and investment
decisions. The sub-modules found in typical CRM packages are marketing, sales, customer service and support systems using Internet and other
access facilities with the intention of increasing customer loyalty through
improved customer satisfaction.
E-commerce is the conduct of business transactions among organizations with the support of networked information and communication technologies, especially utilizing Internet applications such as the Web and email, effectively reaching global customers. Adoption of e-commerce and ebusiness solutions, especially business-to-business (B2B) solutions, are seen
by many as the wave of current and future extensions of traditional ERP
systems of most small, medium and large vendors. The front-end Web-based
Internet-business applications are integrated with the back-office ERP-based
applications, enabling business transactions such as order placement, purchasing, inventory updates, employee benefits, etc. to take place between the
customers, suppliers and the enterprise based on reliable, relevant data and
applications instantly in a border-less domain.
The legacy ERP systems designed to integrate enterprise functions
within the four walls of the enterprise have introduced software solutions with
a Web-interface essentially extending to Internet-enabled CRM, SCM and
other Internet-business models. Examples of such extended ERPs are available from most of the ERP vendors. Thus SAP’s Internet-enabled integrated
ERP system called mySAP.COM (SAP, 2001) is a suite of ERP, CRM and
other products that can be linked together using Internet portals. The concept
of the Internet-enabled extended ERP system is shown in Figure 4.
An example of an extended ERP system may be Oracle’s e-business suite
of ERP systems that connects to CRM and SCM. Oracle’s FastForward Web
Store (Oracle, 2001) provides applications for establishing online stores for
handling transactions and services with the possibility of linking into Oracle’s
ERP applications. ERP and e-commerce applications of an enterprise can
share a common database with the deployment of Oracle Applications 11i
(Oracle, 2001) integrating Web sites with ERP back-office applications. Baan
has integrated its ERP, CRM and SCM with manufacturing management
software. J.D. Edwards’ Oneworld ERP package is reengineered to OneWorld
Xe (“Xe” stands for “extended enterprise”), which enables the organization
to extend the enterprise beyond physical walls to collaborate with customers,
partners, and suppliers with additional tools for business-to-business (B2B)
14 Rashid, Hossain & Patrick

Figure 4: Web-enabled extended ERP system

CRM/SCM
Application
Server

ERP
Application
Server

I
N
T
Web Server
R
Web Portals
A
E-mail Server
N
E
T
Enterprise Systems

I
N
T
E
R
N
E
T

Web Browser
Mail Client

Customer

success. The Swedish ERP vendor Intentia International AB (Intentia,
2001) has a product suite called Movex that integrates ERP, CRM and
other management software.

SUMMARY AND THE FUTURE
The major industrial information systems manufacturers that emerged
from the 1980s and early 1990s defined the history of the development of ERP
systems. Hence the major providers are representatives of certain industries
as much as competitors in a common marketplace. To this extent there are still
opportunities for new ERP vendors to emerge from industries that so far have
not contributed to the ERP phenomenon. Some obvious examples are the
aerospace industry, the finance industry and the logistics industry. Analysis
of the market penetration of ERP systems shows clearly that the current
players have to downsize their products and offerings to be attractive to
SMEs. There appears to be no public discussion as to how this will be
achieved and whether it requires a significant change in software architecture.
This situation again is an opportunity for smaller players to seize the day and
offer smaller systems running on smaller hardware platforms more efficiently. These innovators will ultimately take the lead in the ERP software
market as large systems will not produce the continual income stream that
small, robust, easy-to-use systems can achieve. Importantly these attributes
contribute to a system becoming ubiquitous in the same way that Microsoft
has achieved ubiquity for its operating system. Future successful vendors will
The Evolution of ERP Systems: A Historical Perspective 15

capture large markets of smaller businesses, who will provide a more
consistent and enduring income stream.

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Project Planning. New York: John Wiley & Sons.
Tadjer, R. (1998). Enterprise resource planning. Internetweek, Manhasset,
April 13.

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Evolution of erp systems

  • 1. The Evolution of ERP Systems: A Historical Perspective 1 Chapter I The Evolution of ERP Systems: A Historical Perspective Mohammad A. Rashid Massey University–Albany, New Zealand Liaquat Hossain Syracuse University, USA Jon David Patrick University of Sydney, Australia ERP systems are now ubiquitous in large businesses and the current move by vendors is to repackage them for small to medium enterprises (SMEs). This migration has many consequences that have to be addressed through understanding the history and evolution of ERP systems and their current architectures. The advantages and disadvantages of the ERP systems will impact their penetration in this new market. The market position and general strategy of the major systems providers in preparation for this push are described. The chapter concludes that the growth and success of ERP adoption and development in the new millennium will depend on the legacy ERP system’s capability of extending to Customer Relationship Management (CRM), Supply Chain Management (SCM) and other extended modules, and integration with the Internet-enabled applications. INTRODUCTION The unprecedented growth of information and communication technologies (ICT) driven by microelectronics, computer hardware and software systems has influenced all facets of computing applications across organizaCopyright © 2002, Idea Group Publishing.
  • 2. 2 Rashid, Hossain & Patrick tions. Simultaneously the business environment is becoming increasingly complex with functional units requiring more and more inter-functional data flow for decision making, timely and efficient procurement of product parts, management of inventory, accounting, human resources and distribution of goods and services. In this context, management of organizations needs efficient information systems to improve competitiveness by cost reduction and better logistics. It is universally recognized by large and small-tomedium-size enterprises (SME) that the capability of providing the right information at the right time brings tremendous rewards to organizations in a global competitive world of complex business practices. Starting in the late 1980s and the beginning of the 1990s new software systems known in the industry as enterprise resource planning (ERP) systems have surfaced in the market targeting mainly large complex business organizations. These complex, expensive, powerful, proprietary systems are offthe-shelf solutions requiring consultants to tailor and implement them based on the company’s requirements. In many cases they force companies to reengineer their business processes to accommodate the logic of the software modules for streamlining data flow throughout the organization. These software solutions, unlike the old, traditional in-house-designed companyspecific systems, are integrated multi-module commercial packages suitable for tailoring and adding “add-ons” as and when required. The phenomenal growth of computing power and the Internet is bringing ever more challenges for the ERP vendors and the customers to redesign ERP products, breaking the barrier of proprietorship and customization, and embracing the collaborative business over the intranet, extranet and the Internet in a seamless manner. The vendors already promise many “add-on” modules, some of which are already in the market as a sign of acceptance of these challenges by the ERP vendors. It is a never-ending process of reengineering and development bringing new products and solutions to the ERP market. ERP vendors and customers have recognized the need for packages that follow open architecture, provide interchangeable modules and allow easy customization and user interfacing. ERP SYSTEMS DEFINED Enterprise resource planning systems or enterprise systems are software systems for business management, encompassing modules supporting functional areas such as planning, manufacturing, sales, marketing, distribution, accounting, financial, human resource management, project management, inventory management, service and maintenance, transportation and e-busi-
  • 3. The Evolution of ERP Systems: A Historical Perspective 3 ness. The architecture of the software facilitates transparent integration of modules, providing flow of information between all functions within the enterprise in a consistently visible manner. Corporate computing with ERPs allows companies to implement a single integrated system by replacing or re-engineering their mostly incompatible legacy information systems. American Production and Inventory Control Society (2001) has defined ERP systems as “a method for the effective planning and controlling of all the resources needed to take, make, ship and account for customer orders in a manufacturing, distribution or service company.” We quote several definitions from the published literature to further explain the concept: “ERP (enterprise resource planning systems) comprises of a commercial software package that promises the seamless integration of all the information flowing through the company–financial, accounting, human resources, supply chain and customer information” (Davenport, 1998). “ERP systems are configurable information systems packages that integrate information and information-based processes within and across functional areas in an organization” (Kumar & Van Hillsgersberg, 2000). “One database, one application and a unified interface across the entire enterprise” (Tadjer, 1998). “ERP systems are computer-based systems designed to process an organization’s transactions and facilitate integrated and real-time planning, production, and customer response” (O’Leary, 2001). The concept of the ERP system can be illustrated, following Davenport (1998), with the diagram in Figure 1. EVOLUTION OF ERP SYSTEMS The evolution of ERP systems closely followed the spectacular developments in the field of computer hardware and software systems. During the Figure 1: ERP systems concept Front-Office C U S T O M E R S Corporate Reporting Back-Office Financial Applications Sales & Distribution Service Applications Central Database Manufacturing Applications Inventory Management Human Resources Management S U P P L I E R S
  • 4. 4 Rashid, Hossain & Patrick 1960s most organizations designed, developed and implemented centralized computing systems, mostly automating their inventory control systems using inventory control packages (IC). These were legacy systems based on programming languages such as COBOL, ALGOL and FORTRAN. Material requirements planning (MRP) systems were developed in the 1970s which involved mainly planning the product or parts requirements according to the master production schedule. Following this route new software systems called manufacturing resources planning (MRP II) were introduced in the 1980s with an emphasis on optimizing manufacturing processes by synchronizing the materials with production requirements. MRP II included areas such as shop floor and distribution management, project management, finance, human resource and engineering. ERP systems first appeared in the late 1980s and the beginning of the 1990s with the power of enterprise-wide inter-functional coordination and integration. Based on the technological foundations of MRP and MRP II, ERP systems integrate business processes including manufacturing, distribution, accounting, financial, human resource management, project management, inventory management, service and maintenance, and transportation, providing accessibility, visibility and consistency across the enterprise. During the 1990s ERP vendors added more modules and functions as “add-ons” to the core modules giving birth to the “extended ERPs.” These ERP extensions include advanced planning and scheduling (APS), e-business solutions such as customer relationship management (CRM) and supply chain management (SCM). Figure 2 summarizes the historical events related with ERP. Figure 2: ERP evolution 2000s Extended ERP 1990s 1980s Enterprise Resource Planning (ERP) Manufacturing Resources Planning (MRP II) 1970s Material Requirements Planning (MRP) 1960s Inventory Control Packages
  • 5. The Evolution of ERP Systems: A Historical Perspective 5 ERP SYSTEMS AND ORGANIZATIONS It is generally a misleading perception that implementing an ERP system will improve organizations’ functionalities overnight. The high expectation of achieving all-round cost savings and service improvements is very much dependent on how good the chosen ERP system fits to the organizational functionalities and how well the tailoring and configuration process of the system matched with the business culture, strategy and structure of the organization. Overall an ERP system is expected to improve both backbone and front-end functions simultaneously. Organizations choose and deploy ERP systems for many tangible and intangible benefits and strategic reasons. In many cases the calculation of return on investment (ROI) is weighted against the many intangible and strategic benefits. The benefits that an industry standard ERP system may bring to organizations are shown in Table 1. To reap the benefits of ERP systems, however, organizations need to overcome certain problems and disadvantages, which are listed in Table 2. It was estimated that the spending on ERP systems in 1998 was about US$17 billion following annual growth rates ranging from 30% to 50%. Companies also spend a multiple of licensing costs on services related to implementation and maintenance of the software. The worldwide license and maintenance revenue for ERP systems was US$21.5 billion in 2000, which represented a growth of 13.1% from the 1999 market value of $US19 billion (Broatch, 2001). The continued growth of the ERP systems market is Table 1: Advantages of ERP systems What benefit Reliable information access Avoid data and operations redundancy Delivery and cycle time reduction Cost reduction Easy adaptability Improved scalability Improved maintenance Global outreach E-Commerce, e-business How Common DBMS, consistent and accurate data, improved reports. Modules access same data from the central database, avoids multiple data input and update operations. Minimizes retrieving and reporting delays. Time savings, improved control by enterprise-wide analysis of organizational decisions. Changes in business processes easy to adapt and restructure. Structured and modular design with “addons.” Vendor-supported long-term contract as part of the system procurement. Extended modules such as CRM and SCM. Internet commerce, collaborative culture.
  • 6. 6 Rashid, Hossain & Patrick Table 2: Disadvantages of ERP systems Disadvantage Time-consuming Expensive Conformity of the modules Vendor dependence Features and complexity Scalability and global outreach Extended ERP capability How to overcome Minimize sensitive issues, internal politics and raise general consensus. Cost may vary from thousands of dollars to millions. Business process reengineering cost may be extremely high. The architecture and components of the selected system should conform to the business processes, culture and strategic goals of the organization. Single vendor vs. multi-vendor consideration, options for “best of breeds,” long-term committed support. ERP system may have too many features and modules so the user needs to consider carefully and implement the needful only. Look for vendor investment in R&D, longterm commitment to product and services, consider Internet-enabled systems. Consider middle-ware “add-on” facilities and extended modules such as CRM and SCM. attributed to the fact that the vendors are adding applications such as supply chain management, customer relationship management and the integration of Internet-enabled applications for e-business. More than 60% of the Fortune 1000 companies have installed or are in the process of implementing packaged ERP systems to support their back-end business activities (Kraft, 2001). These packages implemented by the Fortune 1000 companies run well over the IT budgets for most SMEs. ERP vendors are targeting this untapped SME market with supposedly scaled-back systems suitable for smaller firms by offering simple, cheaper and pre-configured easy-to-install solutions within budget and time constraints. For some vendors this may lead to offering centrally managed Internet-enabled ERP-system-based services for SMEs to access and use anytime from anywhere. ERP SYSTEMS ARCHITECTURE ERP vendors, mostly experienced from the MRP and financial software services fields, realized the limitations of the old legacy information systems
  • 7. The Evolution of ERP Systems: A Historical Perspective 7 used in large enterprises of the 1970s and 1980s. Some of these old systems were developed in-house while others were developed by different vendors using several different database management systems, languages and packages, creating islands of noncompatible solutions unfit for seamless data flow between them. It was difficult to increase the capacity of such systems or the users were unable to upgrade them with the organization’s business changes, strategic goals and new information technologies. An ERP system is required to have the following characteristics: • Modular design comprising many distinct business modules such as financial, manufacturing, accounting, distribution, etc. • Use centralized common database management system (DBMS) • The modules are integrated and provide seamless data flow among the modules, increasing operational transparency through standard interfaces • They are generally complex systems involving high cost • They are flexible and offer best business practices • They require time-consuming tailoring and configuration setups for integrating with the company’s business functions • The modules work in real time with online and batch processing capabilities • They are or soon they will be Internet-enabled Different ERP vendors provide ERP systems with some degree of specialty but the core modules are almost the same for all of them. Some of the core ERP modules found in the successful ERP systems are the following: • Accounting management • Financial management • Manufacturing management • Production management • Transportation management • Sales & distribution management • Human resources management • Supply chain management • Customer relationship management • E-Business The modules of an ERP system can either work as stand-alone units or several modules can be combined together to form an integrated system. The systems are usually designed to operate under several operating platforms such as UNIX, MS Windows NT, Windows 2000, IBM AIX, and HP-UX systems. SAP AG, the largest ERP vendor, provides a number of modules with its famous R/3 ERP system, which are shown in Table 3. New modules are introduced by SAP and other vendors in response to the market and technological demand such as the Internet technology.
  • 8. 8 Rashid, Hossain & Patrick Table 3: Some of the modules of SAP’s R/3 Financial Accounting Project System Human Resources Production Planning Investment Management FI PS HR PP IM Controlling Workflow Plant Maintenance Materials Management Enterprise Controlling CO WF PM MM EC Modules of Internet version mySAP.COM mySAP Workplace mySAP E-Procurement mySAP Supply Chain Mgmt. mySAP Product Lifecycle Mgmt. mySAP Customer Relationship mySAP Business Intelligence Mgmt. mySAP Mobile Business mySAP Financials Asset Management Industry Solutions Quality Management Sales & Distribution Treasury AM IS QM SD TR mySAP Human Resources mySAP Marketplace by SAPMarkets mySAP Hosted Solutions mySAP Technology Enterprise systems employ thin client/server (C/S) technology or client/ fat server (C/FS) architecture, creating a decentralized computing environment. In a C/S system a number of client devices operated by end users such as desktop PCs request services from application servers, which in turn get the requested service-related information from the database servers. The requests may be simple data files, data values, communication services, transaction processing or master file updates. The general practice is to have three-tier architecture such as in Figure 3. In this three-tier system the user interface runs on the client. To run ERP systems relatively powerful PCs (clients) and powerful servers are required where most of the hundreds of thousands of operations are performed. The client/server system functions are performed following three layers of logic: • Presentation Layer: Graphical user interface (GUI) or browser for data entry or accessing system functions • Application Layer: Business rules, functions, logic, and programs acting on data received/transferred from/to the database servers • Database Layer: Management of the organization’s operational or transactional data including metadata; mostly employs industry standard RDBMS with structured query language (SQL) provisions This logical arrangement helps the ERP user interface to run on the clients, the processing modules to run on the middle-tier application servers, and the database system to run on the database servers. COMMERCIAL ERP SYSTEMS The five dominating ERP software suppliers are SAP, Oracle, PeopleSoft, Baan and J.D. Edwards. Together they control more than 60% of the multibillion dollar global market.
  • 9. The Evolution of ERP Systems: A Historical Perspective 9 Figure 3: Three-tier ERP systems architecture Presentation Layer (Front Tier) Application Layer (Middle Tier) Client Workstations Application Servers Database Layer (Back Tier) Database Servers Each vendor, due to historic reasons, has a specialty in one particular module area such as Baan in manufacturing, PeopleSoft in human resources management, SAP in logistics and Oracle in financials. There are also about 50 established and a few more newly emerging smaller and midsize ERP vendors including third-party developers competing for the ERP market. The result is stiff competition and feature-overlapping products difficult to differentiate. Due to keen competition for control of the lucrative ERP market share, the vendors are continuously updating their products and adding new technology-based features. Long-term vision, commitment to service and support, module features, specialty, experience and financial strength for R&D are considered the major vendor qualities for product selection and turnkey implementation. In the following sections we provide brief profiles of these five ERP giants. SAP AG–Flagship Products R/3, mySAP.COM SAP AG (“Systeme, Anwendungen, und Produkte in Datenverarbeitung”), or Systems, Applications and Products in Data Processing, was started by five former IBM engineers in Germany in 1972 for producing integrated business application software for the manufacturing enterprise (SAP, 2001). Its first ERP product, R/2, was launched in 1979 using a mainframe-based centralized database that was then redesigned as client/server software R/3 in 1992. System R/3 was a breakthrough and by 1999 SAP AG became the third largest software vendor in the world and the largest in the ERP sector with a market
  • 10. 10 Rashid, Hossain & Patrick share of about 36% serving over 17,000 customers in over 100 countries. In 1999 SAP AG extended the ERP functions by adding CRM, SCM, sales-force automation and data warehousing. SAP has also invested significantly in its R&D sector with the result of newer versions of R/3 3.1, 4.0, 4.6 including Internet functionalities and other enhancements. SAP’s Internet-enabled ERP solutions are provided by the recently launched ERP product called mySAP.COM. SAP has the broadest ERP functionality, capacity to spend significantly on R&D, strong industry-focused solutions and long-term vision. Oracle Corporation–Flagship Product Oracle Applications Oracle (Oracle, 2001), founded in 1977 in the USA, is best-known for its database software and related applications and is the second largest software company in the world after Microsoft. Oracle’s enterprise software applications started to work with its database in 1987. It accounts for $2.5 billion out of the company’s $9.3 billion in 1999, which places Oracle second to SAP in the enterprise systems category with over 5,000 customers in 140 countries. Oracles ERP system is known as Oracle Applications, having more than 50 different modules in six major categories: finance, accounts payable, human resources, manufacturing, supply chain, projects and front office. Oracle has other strong products in the software field including DBMS, data warehousing, work flow, systems administration, application development tools (APIs), and consulting services. A notable feature of Oracle is that it is both a competitor and a partner to some of the industry leaders in the ERP market such as SAP, Baan and PeopleSoft because of the use of Oracle’s DBMS in their ERP systems. Oracle has integrated its ERP solutions with the Internet and has introduced several applications in the electronic commerce and Internetbased commerce areas. Oracle’s Internet infrastructure is created around two powerful products: Oracle9i Database and Oracle9i Application Server. Another significant feature of Oracle is its OSBS, or Oracle Small Business Suite which provides consistent financials, payroll, inventory control, order entry, purchase orders, and CRM functionality–all delivered as a Web service. Oracle also offers an easy-to-activate Web presence that helps companies to sell their goods via the Internet. PeopleSoft Inc.–Flagship Product PeopleSoft8 PeopleSoft is one of the newest ERP software firms started in 1987 in Pleasanton, California, with specialization in human resource management and financial services modules. PeopleSoft quickly managed to offer other corporate functions and attained a revenue of $32 million in 1992. Enterprise
  • 11. The Evolution of ERP Systems: A Historical Perspective 11 solutions from PeopleSoft include modules for manufacturing, materials management, distribution, finance, human resources and supply chain planning. SAP AG and Oracle–with longer experience, stronger financial base and worldwide presence–are the main competitors to PeopleSoft. Many customers comment that PeopleSoft has a culture of collaboration with customers, which makes it more flexible than its competitors. One of the strengths of PeopleSoft is the recognition by its customers that it is flexible and collaborative. The flagship application PeopleSoft8 with scores of applications was developed by PeopleSoft with an expenditure of $500 million and 2,000 developers over 2 years as a pure Internet-based collaborative enterprise system. “Our revolutionary eBusiness platform is the first open XML platform to offer scalability and ease of use for all users. PeopleSoft 8 requires no client software other than a standard Web browser, giving you the ability to securely run your business anytime, anywhere” (PeopleSoft, 2001). “Our eBusiness applications and consulting services enable true global operations–managing multiple currencies, languages, and business processes for more than 4,400 organizations in 109 countries” (PeopleSoft, 2001). PeopleSoft with about 10% market share, is the third largest ERP vendor after SAP AG and Oracle. The Baan Company–Flagship Product BaanERP Founded in 1978 in The Netherlands, Baan (Baan, 2001) started with expertise in software for the manufacturing industry and by 1997 claimed an ERP market share of roughly 5%. Bann’s revenue in 1998 was roughly $750 million and while facing a slight slowdown in 1999 started growing again in 2001 with sales up 12% at £7,231million and operating profit of £926 million. Baan has more than 15,000 customer sites all over the world and more than 3,000 employees. Baan believes that “the Internet is the ultimate enabler” and “Internet technologies help companies become order-driven and customerfocused by enabling collaboration across the ‘value chain.’ Suppliers, distributors, manufacturers and customers can work together to deliver the right product at the right price.” ERP solution areas that Baan covers include finance, procurement, manufacturing, distribution, integration and implementation, planning, sales, service and maintenance, business portals, collaborative commerce and business intelligence. Bann’s flagship product is BaanERP (formerly called Triton, then Baan IV), launched in 1998. One innovative product from Baan is the Orgware tool that can cut implementation cost significantly by automatically configuring the enterprise software. Baan’s ERP software is best known in the aerospace, automotive, defence, and electronics industries.
  • 12. 12 Rashid, Hossain & Patrick J.D. Edwards & Co.–Flagship Product OneWorld J.D. Edwards was founded in 1977 in Denver (cofounded by Jack Thompson, Dan Gregory and C. Edward McVaney) with long experience of supplying software for the AS/400 market. J.D. Edwards’ flagship ERP product called OneWorld is “capable of running on multiple platforms and with multiple databases, ... [and] revolutionizes enterprise software by liberating users from inflexible, static technologies” (JD Edwards, 2001). The product includes modules for finance, manufacturing, distribution/logistics and human resources, quality management, maintenance management, data warehousing, customer support and after-sales service. J.D. Edwards’ revenue jumped to $944 million in 1999 from $120 million in1992, having more than 5,000 customers in over 100 countries. The OneWorld system is considered to be more flexible than similar competing products and within the reach of smaller enterprises. J.D. Edwards’ Internet-extended version of OneWorld was launched recently as OneWorld Xe (“Xe” stands for “extended enterprise”). EXTENDED ERP The proliferation of the Internet has shown tremendous impact on every aspect of the IT sector including ERP systems becoming more and more “Internet-enabled” (Lawton, 2000). This environment of accessing systems resources from anywhere anytime has helped ERP vendors extend their legacy ERP systems to integrate with newer external business modules such as supply chain management, customer relationship management, sales force automation (SFA), advanced planning and scheduling (APS), business intelligence (BI), and e-business capabilities. In fact ERP is becoming the ebusiness backbone for organizations doing online business transactions over the Internet. Internet-based solutions are destined to improve customer satisfaction, increase marketing and sales opportunities, expand distribution channels, and provide more cost-effective billing and payment methods. The extension to SCM and CRM enables effective tri-party business relationships between the organization, suppliers and the customers. A supply chain management has sub-modules for procurement of materials, transformation of the materials into products and distribution of products to customers. “Successful supply chain management allows an enterprise to anticipate demand and deliver the right product to the right place at the right time at the lowest possible cost to satisfy its customers. Dramatic savings can be achieved in inventory reduction, transportation costs and reduced spoilage by
  • 13. The Evolution of ERP Systems: A Historical Perspective 13 matching supply with actual demand” (IBM, 2001). With the deployment of a CRM, organizations are able to gather knowledge about their customers, opening opportunities to assess customer needs, values and costs throughout the business life cycle for better understanding and investment decisions. The sub-modules found in typical CRM packages are marketing, sales, customer service and support systems using Internet and other access facilities with the intention of increasing customer loyalty through improved customer satisfaction. E-commerce is the conduct of business transactions among organizations with the support of networked information and communication technologies, especially utilizing Internet applications such as the Web and email, effectively reaching global customers. Adoption of e-commerce and ebusiness solutions, especially business-to-business (B2B) solutions, are seen by many as the wave of current and future extensions of traditional ERP systems of most small, medium and large vendors. The front-end Web-based Internet-business applications are integrated with the back-office ERP-based applications, enabling business transactions such as order placement, purchasing, inventory updates, employee benefits, etc. to take place between the customers, suppliers and the enterprise based on reliable, relevant data and applications instantly in a border-less domain. The legacy ERP systems designed to integrate enterprise functions within the four walls of the enterprise have introduced software solutions with a Web-interface essentially extending to Internet-enabled CRM, SCM and other Internet-business models. Examples of such extended ERPs are available from most of the ERP vendors. Thus SAP’s Internet-enabled integrated ERP system called mySAP.COM (SAP, 2001) is a suite of ERP, CRM and other products that can be linked together using Internet portals. The concept of the Internet-enabled extended ERP system is shown in Figure 4. An example of an extended ERP system may be Oracle’s e-business suite of ERP systems that connects to CRM and SCM. Oracle’s FastForward Web Store (Oracle, 2001) provides applications for establishing online stores for handling transactions and services with the possibility of linking into Oracle’s ERP applications. ERP and e-commerce applications of an enterprise can share a common database with the deployment of Oracle Applications 11i (Oracle, 2001) integrating Web sites with ERP back-office applications. Baan has integrated its ERP, CRM and SCM with manufacturing management software. J.D. Edwards’ Oneworld ERP package is reengineered to OneWorld Xe (“Xe” stands for “extended enterprise”), which enables the organization to extend the enterprise beyond physical walls to collaborate with customers, partners, and suppliers with additional tools for business-to-business (B2B)
  • 14. 14 Rashid, Hossain & Patrick Figure 4: Web-enabled extended ERP system CRM/SCM Application Server ERP Application Server I N T Web Server R Web Portals A E-mail Server N E T Enterprise Systems I N T E R N E T Web Browser Mail Client Customer success. The Swedish ERP vendor Intentia International AB (Intentia, 2001) has a product suite called Movex that integrates ERP, CRM and other management software. SUMMARY AND THE FUTURE The major industrial information systems manufacturers that emerged from the 1980s and early 1990s defined the history of the development of ERP systems. Hence the major providers are representatives of certain industries as much as competitors in a common marketplace. To this extent there are still opportunities for new ERP vendors to emerge from industries that so far have not contributed to the ERP phenomenon. Some obvious examples are the aerospace industry, the finance industry and the logistics industry. Analysis of the market penetration of ERP systems shows clearly that the current players have to downsize their products and offerings to be attractive to SMEs. There appears to be no public discussion as to how this will be achieved and whether it requires a significant change in software architecture. This situation again is an opportunity for smaller players to seize the day and offer smaller systems running on smaller hardware platforms more efficiently. These innovators will ultimately take the lead in the ERP software market as large systems will not produce the continual income stream that small, robust, easy-to-use systems can achieve. Importantly these attributes contribute to a system becoming ubiquitous in the same way that Microsoft has achieved ubiquity for its operating system. Future successful vendors will
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