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2. State of SOA in the Enterprise
Too many competing IT blueprints (SOA, Web 2.0 Grid
2.0, EDA, Social Networking, Cloud Computing, etc) with
little real meat
IT infrastructure is complex, fragmented and brittle
Projects continue to drive IT development
IT‟s confidence is impaired by confusing vendor
messages (marketecture) and industry standards
SOA is growing in acceptance but is still undefined and
lacking collective industry experience, tools and
standards
3. The Business Challenge
App 4
App 1
App 3
App 2
Business user - “I need one place to get customer,
transactional, and internal information”
Business user - “I want to log in once and have
information be relevant to me and my customer”
CIO – “I want to build services once and expose to
customer and employees across access points
(channels) using common processes”
DDA, Financial, CRM,
External data, Partner, Data Warehouses,
Documents Websites
Trading
Transactional, Lending
4. The Technology Challenge
Brittle applications
Multiple sources of truth
Inconsistent user experiences
Heterogeneous technology platforms
Overhauling is very expensive and time consuming
Lots of single independent applications
No reusability of services – build same thing many times
Over capacity due to siloed implementations
Business processes are inconsistent from channel to
channel
5. Context
The road to service-oriented architecture
Dream of faster, cheaper, easier integration
Web Services makes service orientation practical
Industry interoperability
Vendor and Partners role
Industry catalyst – services enable at the core of all products
Broad products and tools support
Developer ecosystem and skills
Results
Faster, easier, cheaper integration
Agility, Time-to-value
Successful customers “snowball”
6. SOA, Business Process Management
and Multi-Channel Integration shift
the way we think
Traditional Applications Service-Oriented Architecture
Designed to last Designed to change
Loosely coupled, agile and
Tightly coupled
adaptive
Integrated silos Composed of services
Code-oriented Process-oriented
Interactive and iterative
Long development cycle
development
Cost centered Business centered
Fixed, limited capacity Dynamic on-demand capacity
8. SOA – Defined
Service Orientated Architecture is an emerging industry
architecture that emphasizes the provision of services to
consumers via published interfaces
Service Oriented Architecture is an approach to
organizing information technology in which data, logic,
and infrastructure resources are accessed by routing
messages between network interfaces
Basic value proposition is to provide consistent, stable
interfaces in front of diverse or volatile implementations
Establish context for information exchange across
organizations
Encapsulate complexity within organizations
Enable context-sensitive information processing
9. SOA an Organizational Commitment
A service-oriented architecture is an organizational
commitment to build its application portfolio around a
service component model
The goal of an SOA is to allow business activities to be
orchestrated as components in applications targeting
both internal and extra-organizational actors, ultimately
enhancing business agility
An SOA is the product of the self-awareness developed
through the practice of enterprise architecture
10. SOA – How it works
Service Orientated Architecture:
Is based on the disaggregation of 'applications' into
set of services, which are:
Decomposed to a base set of services, which:
Encapsulate non-service oriented architectures and
technical detail, and:
Are then recursively composed into higher order
services, which:
Are orchestrated using workflow technology to
provide support for a particular business process.
11. Pressures on the Business
Key Drivers for SOA Adoption
Supplier Customer Partner
Evolving Business Objectives
Technology
Growth, profit,
and value
Changing Markets
Regulation/
Continuous Deregulation
Leadership Business
Mergers &
Transformation acquisitions
Customer
satisfaction
Compliance
Innovation
Satisfying Unpredictable Needs
Competition
Business efficiency & agility
12. SOA Design Principles
Business-level entities
and their relationships
Relationship between
to services
business entities and
Service Model
SOA/operational services
Technical Model Domain Model
Domain-specific
General architectural Service Architecture architectural services
services (e.g., discovery, (e.g., auditing of bank
SOA Services Domain Services
security, source of truth ) transactions,
confirmation of
Service Enablement
delivery)
Operational Domain
Web services managing Domain-specific Web
the domain (e.g., services (e.g., flight
application server mgmt) status, pump level,
checking account
balance service)
13. SOA – more details
SOA is not dependent specifically on web services, but
the modern implementation is driven by this industry
trend, and it will be necessary in the general case to
expose a 'canonical form' of a service that can be
consumed from any platform. This does not preclude the
simultaneous exposure of any other binding, native or
otherwise
SOA includes both event-based (asynchronous) and
request-response (synchronous) messaging paradigms,
and properly implemented is a key enabler for flexibly
implementing „real-time‟ or „right-time‟ enterprise
capabilities
14. SOA – It‟s About Business!
Business Information Technology
IT exists to support business
We are looking for an overarching architecture that supports
the business needs of IT
Businesses have huge existing investments in IT
These investments:
• Fill different needs,
• Are implemented on different platforms, and
• Are of different vintages
No one in their right mind believes these huge investments
will be discarded!
Businesses are evolving to be IT centric
More and more virtual businesses are emerging
Information is their key to survival…
15. Agility => SOA?
Every company aspires to be more „agile‟ these days.
IT solutions should in theory assist companies in being
agile, but in practice:
A lot of corporate data and process assets are „locked‟ in
legacy systems
The investment in and dependence on those systems
means that „rip and replace‟ is just not a sensible option
Traditional – and even current state – application building
techniques don‟t support nimble „refactoring‟ to meet new
business challenges or improved/different processes
The increasingly collaborative, partner-based working
environment is barely reflected in most IT infrastructure and
capability
…
16. Agility => SOA?
SOA – built on canonical, industry standard web services
– enables the following:
Leverage and progressive migration for existing assets
New applications to be constructed using „workflow‟
technologies – intrinsically more „rewireable‟ on demand
Increased reuse capabilities, enabling better-faster-cheaper
application development
„Real time enterprise‟ where information flows at event
time, not in batch time – enabling much more responsive
and collaborative processes to be used to manage the
business, and better decision making at a micro level
Improved visibility of business process and associated
data, enabling business intelligence and better decision
making at a macro level
17. Isn‟t This Just EAI (or EDI!)?
“Yes, but based on broader standards”
HTTP for communication
Thanks to Internet ubiquity
XML for data representation
Thanks to success of HTML
SOAP for interoperation
Thanks to experience with DCOM, Corba, …
Unprecedented industry cooperation
Thanks to entrenched platforms and legacy systems
Rapid agreement on SOA standards
Thanks to WS-I, W3C and the SOA Consortium (Oracle,
HP, Microsoft, IBM, Cisco, Sun, BEA, and others)
Rapid roll-out of SOA development tools
Thanks to long experience with OOP, modularity, …
18. The Role of Web Services
Web Services are optimized for XML transport /
messaging
Web Services is the only true cross-platform messaging
and invocation stack
Web Services is based on open standards
Web Services implementations are becoming
increasingly versatile and performant
Web Services implements a loosely coupled (late
binding), multi-protocol, multi-format, multi-semantic,
self-describing contract-based interface with very broad
industry support…
19. The Industry Is Aligning
Standards groups for technology and industry
Consortium groups for business, IT and vendor efforts
Vendors now include in core messaging and importantly
are services enabling application, products and solutions
at the core
20. Benefits of SOA
A service-oriented architecture views the businesses
operating model and the supporting technology
model as a network of services
Services model business capabilities
Business
Systems serve the business, not vice versa
Inter-departmental or inter-org relationships formalized and
expressed through service interaction
Facilitates outsourcing and focus on core competencies
Formal interaction model facilitates simplicity, correctness,
Architecture
and implementation independence, dependency management
Development
The communication connections can involve either simple
data passing or it could involve two or more services
coordinating some business activities or processes
Explicit interaction points are more discoverable, operable
IT and
Operations
Crisply isolates service capability from IT environment
Independent deployment, versioning, management, topology
21. For many, SOA matters and here is
what folks are saying “The challenges
in moving to SOA…”
From a technical perspective
we think we understand what SOA is from a technical perspective
we talk a lot about it amongst ourselves and with suppliers
we have started to imagine what it could mean to the business -
but we have no methods, techniques or tools to engage the
business in a structured dialog about it
From a business perspective
we are hearing a lot about it but are not sure what it means at a
business level
we cannot fund the transition to SOA as a technical project – it is
too big, we need to have real business impact and value every
step of the way
early projects should both prove the benefits of the new
architecture (technical and business) and deliver business results
we have no methods, techniques or tools to engage with the
technical organization in a structured dialog about it
22. The Business Value of SOA
• Something
distinctly new and
better TRANSFORMATIONAL
(Capability Management, SOA…)
• What is really
needed in a
marketplace
• Radically new and better
• Cut Costs
Potential ideas that do not
• Reduce Cycle
Impact EVOLUTIONARY operate within the
Time (BPR, Process Management)
existing structure of the
• Improve Quality organization or
marketplace but may, in
fact, dismantle those
structures
EFFICIENCY, QUALITY
• Radically distributed
(TQM, TOC, LEAN, CMM…)
• Industry Solutions
Scope/Disruption
24. SOA Journey
Migration to SOA is a journey – not a “big bang”
The journey involves people and process – not just
technology
Not all journeys are the same
Addresses existing pain points and prepares for long-
term transformation
Embraces heterogeneity – leverages investments, not
“rip and replace”
Requires a collaborative approach
25. What‟s required for successful SOA?
SOA Governance
(Business and IT stakeholders)
Process Education and SOA Methodology
Business Process Management
(For process orchestration)
Business Case Analysis
Service Lifecycle
Frameworks, Tools and Templates
Manageability
Management
Security and
(For developing enterprise class modules and services)
Enterprise Service Bus / Messaging Layer
(For routing, brokering and managing service
invocations )
Infrastructure
(For hosting and provisioning services on-demand)
26. Easy Steps towards SOA
Join WS-I, W3C and SOA Consortium
Leverage web services & XML for internal application
integration
Consider replacing / extending existing B2B
infrastructure to use web services / XML based solutions
where feasible (common EAI/B2B/EDI)
Commonize business modelling efforts to build a
portfolio of business functions and data access that over
time can be implemented as services
Choose your vendor(s) carefully… ensure you have a
good roadmap from current state forward
27. Less Easy Steps to SOA
Establish enterprise architecture & associated
governance (warning: does NOT mean „one size fits all‟)
Build a „fabric‟ or „framework‟ of common services to
support loosely coupled integration (security & isolation,
routing, transformation, monitoring…)
Refactor modelling and portfolio management efforts into
enterprise-wide efforts arranged around a Business
Conceptual Enterprise Object Model
28. Less Easy Steps to SOA (continued…)
Migrate from „batch‟ to „real time enterprise‟ using event-
based, asynchronous messages as default paradigm
Build out applications as sets of services aligned around
an enterprise-class object (process/data) model
Leverage orchestration and human-orientated workflow
where feasible, evolving to be the default paradigm
„above the encapsulation boundary‟
Proactively look for simple processes to make agile,
particularly with partners
29. SOA: a Groundswell of Good Design
Applications that use an SOA have a built-in integration
model
Incremental development of an interoperable
application portfolio
Requires rigorous design driven by best practices
Proof of concept prods community engagement
Complying with emergent standards relatively
inexpensive, thanks to encapsulation
Incompleteness of requirements suggests use of agile
development methodologies
Idea implicit in global web services architecture, which
cannot be top-down
30. Closing Comments
Service-orientation enables differentiated ways of doing
business
Service-orientation allows an organization to get control
of unmanageable IT assets
Once in control, you can
• Optimize
• Orchestrate
• Open access points to processes
• Create agility
Top down or bottom up, SOA is a path to better
alignment of business and technology
SOA helps enable other key strategic IT initiatives
including cloud computing, social networking
convergence and “green” initiatives
31. Additional Information
SOA Consortium
http://www.soa-consortium.org/index.htm
Worldwide Web Consortium
http://www.w3.org/
WebServices Interoperability Organization
http://www.ws-i.org/
Winners of SOA Case Study Competition
http://www.soa-consortium.org/contest-winners.htm