A service definition document (SDD) framework is provided for defining blended services that utilize multiple service endpoints. The SDD framework can comprise a first category that defines a service endpoint representing a blended service, a second category that defines a plurality of service endpoints utilized by the blended service, and a third category that defines execution of the blended service. Blended services can be provided by creating a model of a blended service and saving a representation of the model of the blended service in a service definition document (SDD) framework. A blended service defined in a SDD framework can be executed by receiving the SDD and executing the blended service as defined by the SDD using a service execution environment (SEE).