I just referenced my application domain layer dll to the new WCF service that I am creating.
On my initial tests I am able to use and return the objects from my domain layer on the WCF service.
Question that come in my mind is none of my domain claseses have [DataContract] attribute so does this create a limitation or problem for me that I should be aware of? Or any other concerns that I should know when using other class library in a WCF project?