This chapter gives an overview on the EAI Dispatch Service, transforming output, and implementing a new dispatch service. It contains the following topics:

• Overview of EAI Dispatch Service
• Output Transformation
• EAI Dispatch Service
• Implementing EAI Dispatch Service
• Testing Your EAI Dispatch Service Using Argument Tracing
• Differences Between EAI Dispatch Service and Workflow
• ProcessAggregateRequest Method
• EAI Dispatch Service Scenarios
• Examples of Search Expression Grammar
• Examples of Dispatch Output Property Sets