IIS7 / WPAS: Multiple WCF services in same AppDomain?
If host my WCF services in IIS7 or WPAS, is it possible to load up two or more services into the same AppDomain so that they can share static variables?
Sure you can expose as many Endpoints within a Web Application as you want (even of different WCF Services). This should not be limited to either IIS or WPAS.
Doing so will enable you to access any kind of shared data. Even though I would normally advise against using static variables to share information (But of course I don't know your requirements).