REST (Representational State Transfer) is an architectural style that requires web applications to support HTTP methods such as GET, POST, PUT, PATCH, and DELETE, and to use a consistent, application-independent interface. Integration Server can act as a REST server or a REST client.

When Integration Server acts as a REST client, Integration Server sends specifically formatted requests to the REST server.

For Integration Server to act as a REST server, it must host services that perform the GET, PUT, POST, PATCH, and DELETE functions. These services perform functions that are specific to your application.