What is Service Credentials Negotiation?

Question

I study microsoft explanation about Service Credentials Negotiation.. but i don't understand What is Service Credentials Negotiation and when we should use it?

Answer 1

Negotiation is the process of establishing trust between a client and a service by exchanging credentials. The process is performed iteratively between the client and the service, so as to disclose only the information necessary for the next step in the negotiation process. In practice, the end result is the delivery of a service's credential to the client to be used in subsequent operations. With one exception, by default the system-provided bindings in WCF negotiate the service credential automatically when using message-level security. (The exception is the BasicHttpBinding, which does not enable security by default.) To disable this behavior, see the NegotiateServiceCredential and NegotiateServiceCredential properties.

http://msdn.microsoft.com/en-us/library/ms733836(v=vs.110).aspx

So, by default the system-provided bindings in WCF negotiate the service credential automatically when using message-level security with exception of BasicHttpBinding and you only need to worry about it if you need to change this default behavior and provision credentials at the client instead of letting the service take care of that for you through process called negotiation...