SOA : Service Oriented Design

This is a gist of Service Oriented Design from the "SOA : Principles of Service Design" by Thomas Earl.

Design Phase

• The Service Oriented Design takes the service candidates and converts them to actual services by creating actual physical contracts.
• It is highly recommended that a high level service inventory be defined prior to creating physical contracts. 
• It is better to follow the waterfall approach in doing the upfront service analysis and service modelling to be followed by agile approach in implementing the services.
• "Contract First Design" is the ideal form of design where the service contract is created before developing the service logic.