Lync 2013 Standard vs Enterprise

Standard Edition

– Allows for only single server setup in the pool
– Uses the local copy of SQL database for Lync
– Doesn’t provide High Availability
– Scalable up to 5,000 max. users. 
– Suitable for Small Organisations or Pilot Deployments

Enterprise Edition

– Allow for multiple server to be setup in a pool
– Ability to run applications across the pool
– Require a back end SQL server to host Lync database content
– Scalable up to 80,000 clients
– Suitable for Larger Organisation