In this post, I walk through the step by step process to build the Lync 2013 Persistent Chat server. Persistent Chat is a capability where you can create chat rooms that contain IM content that persists over time. This capability was called Group Chat in Lync 2010. Also in Lync 2010, Group Chat required a separate client program. In Lync 2013, the Persistent Chat capabilities are built into the Lync 2013 client so users don’t need to load two clients.
Here are the step by step build process: Step By Step Build for Lync 2013 Persistent Chat server