Session given on february 21st 2012 on Principles of Service-Oriented Architecture for the Oracle Division of Capgemini The Netherlands

1. Principles of Service-Oriented Architecture
Douwe Pieter van den Bos
Utrecht, February 21st 2012

2. Introduction
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3. What do we need to know to design an
(Service-Oriented) Architecture?
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4. 6 W’s
 Who?
 … benefits from a SOA?
 … is responsible for the SOA?
 What?
 … is a SOA?
 … are Services?
 Where?
 … in the organization do we implement a SOA?
 … in the process …
 When?
 … in time do we implement a SOA?
 … is an organization mature enough for a SOA?
 How?
 … does the technology work?
 … much will it cost?
 Why?
 … do we need to implement the SOA?
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5. Why do we want
Service-Oriented Architecture?
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6. Reducing Costs
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7. Agility
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8. Increasing Competitive Advantage
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9. Time-to-market
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10. Consolidation
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11. Alignment
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12. What is
Service-Oriented Architecture?

13. Layers
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SOA Reference Architecture
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14. Maturity
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SOA Maturity Model
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15. What do we need to achieve this?
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16. 8 Principles
 Standardized
 Loosely Coupled
 Reusable
 Composable
 Autonomic
 Stateless
 Abstract
 Discoverable
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17. Standardized
 Need to operate beyond:
• Technologies
• Environments
• Knowledge
 Ensures:
• Consistency
• Reliability
• Governance
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18. Loosely Coupled
 Independent Design & Evolution
 Decouples from Environment
 Interoperability Guaranteed
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19. Reusable
 Reuse & Multi-Purpose of:
• Resources
• Logic
• Functionality
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20. Composable
 Combine in order to create.
 Break up into smaller parts.
 Less Complexity.
 Supports Growth.
 Compose versus Build
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21. Autonomic
 Less (/ No) Dependencies
 Increases Reliability
 Predictable Behavior
 Control over Resources
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22. Stateless
 Needed to increase:
• Scalability
• Availability
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23. Abstract
 “No one needs to know what’s under the hood…”
 Enables “”Loosely Coupled”
 Makes Granularity Possible
 It offers possibilities to grow and mature without consumer
intervention
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24. Discoverable
 No Secret
 Easy Identification
 Optimizes Reuse
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25. More information
Please contact:
• Douwe Pieter van den Bos
douwe-pieter.vanden.bos@capgemini.com
+31 6 203 623 88
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26. www.capgemini.com
The information contained in this presentation is proprietary. ©2010 Capgemini. All rights reserved