Microsoft provides the LRS software to certified OEM partners which include Crestron, Polycom and Smart. This article explores the various topologies which are supported by LRS and walks through provisioning an Office365 environment for LRS. Full details of deploying an LRS for both on-premise and online environments can be downloaded here.
LRS supports on-premise Lync environments, pure Office365-S environments, as well as hybrid Lync On-Premise + Exchange On-Line environments. What's not supported today are Hybrid topologies with Lync On-Line with Exchange On-Prem. As of this writing, Microsoft is also testing LRS with Lync Hosting Pack and Office365-D; supportability statements for these can be expected in the coming months. The table below summarizes the various supported topologies today: