This is a url which specifies where the service is hosted. Example is like,
Binding decribes how the client will communicate with the service. WCF makes use of various protocols to communicate with client.
You can read more details about types of bindings here.
This specified what operation(s) to be carried out. It is simple request/response, duplex exchange of information between client and service.
Examining end-points, client come to know what all operations are exposed by a service.