Upgrading the .NET API Server Role
If your Web application interacts with the Content Delivery .NET API, remove old DLLs, update existing DLLs, and add new DLLs.
Upgrading the .NET Content Delivery Web service Server Role
Upgrading the .NET HTTP Upload Server Role
Content Delivery .NET upgrade impact overview
Upgrading the .NET session preview Web service Server Role
Upgrading the .NET session preview Web site extension Server Role
Upgrading the .NET UGC Moderator and Visitor Web service Server Roles