An on-premise solution for migrating previous versions of SBS is supported under a single physical Server 2012 Standard with Hyper-V role, runningVM-1: DC w/ Essentials role and VM-2: Exchange server. However, there is no substantial mention of Sharepoint integration. For example, in Server Essentials 2012 R2 Migration Guide, Exchange is addressed in LOB migration section, but not Sharepoint. Standalone Sharepoint on a DC is not a possibility. Does this mean that Sharepoint should coexist with Exchange on VM-2?
AFAIK, Sharepoint 2013 + Exchange 2013 on a single server instance is not recommended. For the purposes of an SBS-type deployment (< 25 users), however, does coexistence become appropriate?