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In an Enterprise Edition: Consolidated Configuration, one or more Front-End servers host the Lync/Skype for Business Server services. The Back-End database is hosted on its own endpoint. If you are using the Enterprise Edition: Consolidated Configuration, install IM Security on each of the Front-End servers that host Lync/Skype for Business Server services.
Centralized Enterprise Deployment Scenario
If your environment has fewer than 30,000 users, deploy multiple IM Security protected front-end servers to utilize all Lync/Skype for Business Server services and provide external user access.
Access Edge servers are required to provide external user access. Refer to the Microsoft Lync Server 2013/Skype for Business Server 2015 Planning Guide for more details and additional deployment scenarios.
Note
Note
In these scenarios, you should only install IM Security on the Enterprise Edition (Front-End) servers.