1

Design the Interface

• Determine the interface flow for the scenario or quality of service requirement. Look at the requirements for interfacing with external systems.
• Identify the protocol for each information flow. Some interfaces require more that just a single call. Instead, packets flow through the interfaces in the form of a protocol. Understanding this protocol is important to synchronizing the communication between the systems.

2

Define Web Service Interfaces

• Choose the endpoint of a Web service in the application diagram. Define the operation and provide the operation information such as name, return type, and parameters. Make sure the properties reflect the correct language and destination. Generate the stub of the code for the new Web service.
• Save the application diagram and check it into version control.

3

Create Class Interfaces

• Work with the developers to define methods in the classes that provide interfaces between developers. Utilize the class diagram to check consistency of the classes and the new methods.
• Work with developers to help facilitate the integration of development tasks. Check that all assumptions on the integration are understood. Order development tasks to facilitate building one on another to make integration more seamless.

The interface definitions have sufficient detail for developers to proceed with design and implementation.