Lesson1 - SOA Governance Overview

1. 1. SOA Governance
Lesson 1 - SOA Governance Overview
Rakesh Gujjarlapudi
Senior Enterprise Architect
rakesh_gujj@yahoo.com
SOA Governance Overview
Service Oriented Architecture(SOA)
Constructing business-focused software systems from loosely coupled, inter-operable building blocks(services) that can be combined and reused
within and between enterprises to meet business needs.
SOA Governance
Agile & efficient decision and accountability framework to direct and assist organizations in realizing the business benefits(reusable
assets & eliminating liabilities) of SOA.
SOA Governance defines the interaction between policies(what), decision makers(who) and processes(how).
Assets = Electronic artifacts(APIs, XML Documents - XSDs, WSDLs, XSLTs, Documents - Requirements, Design,., systems & services).
Assets are usually electronically stored in a repository and are associated with other assets.
Liabilities on the other hand are duplicated, deprecated, redundant, or unused assets that no longer deliver
business benefits and potentially introduce additional cost. For example, having several services delivering
identical functionality represents a liability since the total cost of supporting and running each service exceeds
the cost of having a single-consolidated service.
Example: A service that supports multi-channel submission of sales orders delivers value in the form of cost savings by way of re-use.
Should a new channel(mobile-apps) be introduced at a later date, the existing service can potentially be re-used thus avoiding the costs
of defining, designing, building, and testing a service specific to the new channel.
Challenges of SOA Governance
Lack of visibility of the existing assets and their performance characteristics.
Tactical projects over strategic solutions.
Poor decision making and lack of accountability.
Low quality Assets that become difficult to maintain and change.
Poor estimation techniques and inaccurate planning.
Goal of SOA Governance
What artifacts are required to deliver governance?
SOA Strategy
SOA reference architecture(Core building blocks for SOA solution)
SOA policies and standards(Patterns, Anti-Patterns, Conventions and best practices)
SOA Assets and taxonomies(All SOA assets available in the enterprise, their description and type)
How can it be delivered?
SOA Road map(Activities required to deliver an SOA strategy & milestones for implementation)
Design-time & Run time governance

2. Who is responsible for delivering it?(Participants required to deliver artifacts. Roles & Responsibilities)
SOA Governance Framework
A framework which defines roles, responsibilities, processes and procedures that are needed to enforce governance for all aspects of service life
cycle.
Business objectives and strategy are the fundamental drivers for the SOA Governance implementation