There are three parts to creating a new service:

• Create a class that contains the business logic
• Create a service that has operations that reference operations to the class's methods
• Create a service group

The service group is a collection of one or more services, and acts as the service reference should we consume it within Visual Studio. We will see how this translates to a URI in the next recipe.

In this example, we will have two service operations: one to get a list of vehicles, and one to update a vehicle's group. The XML documentation has been omitted to save space.