<Dd> Services are stateless, that is either return the requested value or give an exception hence minimizing resource use . </Dd> <Dd> A principle to ensure services have an adequate size and scope . The functionality provided by the service to the user must be relevant . </Dd> <Dd> Services are decomposed or consolidated (normalized) to minimize redundancy . In some, this may not be done, These are the cases where performance optimization, access, and aggregation are required . </Dd> <Dd> Services can be used to compose other services . </Dd>

Most important characteristics of a system that uses service-oriented architecture (soa)