The document describes a maturity model for service oriented architecture (SOA) with 5 stages: Stage 0 focuses on IT departments with little architecture and no reuse. Stage 1 sees some modular software reuse within applications. In Stage 2, information is strategic and SOA expertise grows within lines of business. Stage 3 realizes cost savings through cross-LOB application code reuse. The most mature Stage 4 integrates business flexibility across the entire company.

1. ISS EA SOA Maturity Model
Maturity Level: Stage 0 Stage 1 Stage 2 Stage 3 Stage 4
IT
Business Apps Line of Bus Cross LOB Cross Company
Department
Business
Business flexibility
Realm of Information Information is a Business improved
Service Orientated Architecture
Business integrated into
Strategic
Value Hero's and informs the through information
Business systems and
Proposition Risk business and Governance
Asset
processes
1

2. ISS EA SOA Maturity Model
Maturity Level: Stage 0 Stage 1 Stage 2 Stage 3 Stage 4
IT
Bus Apps Line of Bus Cross LOB Cross Company
Department
Business
Business flexibility
Realm of Information Information is a Business improved
Service Orientated Architecture
Business integrated into
Value Hero's and informs the Gain
Strategic through information
Proposition experience and Realize cost-
cost- Develop systems and
Develop Cross-
Cross-
Risk business business Asset and GovernanceCross-LOB
Informal and expertise with savings via Cross- processes
company
Governance
not defined SOA methods application Business Business
and code re-use
re- agility agility
development
Transformational
Within IT Within Business SOA being Cross-
Cross-
Culture project application seeing some asked for in enterprise
team(s) teams value new projects services
Standard Cost Investment Investment,
Individual or mechanisms optimization optimization risk and
Measurements for
project based and processes and aligned to business value
Success
success criteria benchmarking publishing of benefits strategies
success "Value of IT" realization coordinated.
Formal
Formal Continuous
modular
Architecture Little or no Some Modular enterprise optimization of
business
Capabilities software reuse software re-use
re- SOA SOA-based
SOA-
software uses
architectures architecture
for LOB
2

3. ISS EA SOA Maturity Model
Maturity Level: Stage 0 Stage 1 Stage 2 Stage 3 Stage 4
IT
Bus Apps Line of Bus Cross LOB Cross Company
Department
Business
Business flexibility
Realm of Information Information is a Business improved
Service Orientated Architecture
Business integrated into
Value Hero's and informs the Gain
Strategic through information Develop
systems and
Proposition business Asset Realize cost-
experience and cost- Develop
Risk business and GovernanceCross-LOB Cross-
Cross-
Informal and expertise with savings via Cross- processes
Governance company
not defined SOA methods application Business
Re-
Re- Service
Initial Business
and Infrastructure code re-use
Integration
re- agility
Factoring Orientated
agility
development
Transformational
IT Planning and Reactive Monitoring Business Enterprise Business
Within IT Within Business SOA being Cross-
Cross-
Governance Led Led Objective Led Planning Planning
Culture project application seeing some asked for in enterprise
team(s) teams value new projects services
Technology
Investment,
Value of Data FragmentedStandard
Valued Cost
Accessed Investment
Integral Trusted
Individual or risk and
mechanisms optimization optimization
Measurements for project based business
and processes and aligned to
Success success value
benchmarking publishing of benefits
criteria strategies
success "Value of IT" realization
Isolated Grouped Linked Distributed coordinated.
Composite
Applications
Applications Applications systems Services processes
Formal
Formal Continuous
Little or no modular
Architecture Some Modular enterprise optimization
software business
Capabilities software re-use
re- SOA of SOA-based
SOA-
reuse software uses Business
Technology architectures
Service Levelarchitecture
Centralized Rationalized for Economized
LOB Level
(Infrastructure) Delivery
Delivery
3

4. ISS EA SOA Maturity Model
Maturity Level: Stage 0 Stage 1 Stage 2 Stage 3 Stage 4
IT
Bus Apps Line of Bus Cross LOB Cross Company
Department
Business
Business flexibility
Realm of Information Information is a Business improved
Service Orientated Architecture
Business integrated into
Value Hero's and informs the Gain
Strategic through information Develop
systems and
Proposition business Asset Realize cost-
experience and cost- Develop
Risk business and GovernanceCross-LOB Cross-
Cross-
Informal and expertise with savings via Cross- processes
Governance company
not defined SOA methods application Business
Re-
Re- Service
Initial Business
and Infrastructure code re-use
Integration
re- agility
Factoring Orientated
agility
development
Transformational
IT Planning and Reactive Monitoring Business Enterprise Business
Within IT Within Business SOA being Cross-
Cross-
Governance Led Led Objective Led Planning Planning
Culture project application seeing some asked for in enterprise
team(s) teams value new projects services
Technology
Investment,
Value of Data FragmentedStandard
Valued Cost
Accessed Investment
Integral Trusted
Individual or risk and
mechanisms optimization optimization
Measurements for project based business
and processes and aligned to
Success success value
benchmarking publishing of benefits
criteria strategies
success "Value of IT" realization
Isolated Grouped Linked Distributed coordinated.
Composite
Applications
Applications Applications systems Services processes
Formal
Formal Continuous
Little or no modular
Architecture Some Modular enterprise optimization
software business
Capabilities software re-use
re- SOA of SOA-based
SOA-
reuse software uses Business
Technology architectures
Service Levelarchitecture
Centralized Rationalized for Economized
LOB Level
(Infrastructure) Delivery
Delivery
“You can do EA without SOA, but you can’t do SOA without EA”
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