Windows Process Activation Service generalizes the IIS process model, removing the dependency on HTTP. All the features of ...

Windows Process Activation Service generalizes the IIS process model, removing the dependency on HTTP. All the features of IIS that were previously available only to HTTP applications are now available to applications hosting Windows Communication Foundation (WCF) services, using non-HTTP protocols. IIS 7.0 also uses Windows Process Activation Service for message-based activation over HTTP.