You have a Microsoft Office Communications Server 2007 R2 infrastructure that contains the following components: - One Edge Server - One XMPP Gateway - One Archiving Server - Two media gateways…

You have a Microsoft Office Communications Server 2007 R2 infrastructure that contains the following components:

• One Edge Server
• One XMPP Gateway
• One Archiving Server
• Two media gateways
• One Monitoring Server
• Two Mediation Servers
• One Group Chat Server
• One Standard Edition Front End Server

You plan to migrate the infrastructure to Lync Server 2013. You need to identify the minimum number of Lync Server 2013 servers required to maintain the functionality of the existing infrastructure. How many servers should you identify?