What is reusable Service

Question

What do you meant by the reusable Service?

Answer 1

a) It refers to reusable, autonomous, discoverable, stateless functionality which has the essential granularity, and may be part of the composite application or the composite service.

b) A reusable service should be identified with a business activity described by the service specifications (design-time contract).

c) A service’s constraints, involving the security, SLA, QoS, usage policies, can be described by different run-time contracts, multiple interfaces (the WSDL for a SOAP Web Service), and several implementations (the code).

d) A reusable service must be governed at enterprise level throughout its entire lifecycle, from the design-time through the run-time. Its reuse must be promoted through the prescriptive process, and that reuse must be determined.