Apart from the database components, the Enterprise Server for .NET components operate as a collection of Windows Communication Foundation (WCF) services. Some are self-hosted Windows service programs, and others run under Windows Activation Service (WAS).
WCF is a part of the Microsoft .NET Framework. WAS is a mechanism for hosting .NET WCF services under IIS. It provides a ServiceHost and manages AppDomains for the service code.
The components that run as self-hosted services are:
The components that run under WAS are:
From the Windows Services display, you can view the status of the Event Monitor and the Listener components, available from the Administrative Services window.