# RealPresence Collaboration Server System Editions

The RealPresence Collaboration Server system is available in an Appliance Polycom Rack Server, and a Virtual Edition (packaged as software only).

Most of the functionality described in this document applies to both editions, and so the product references are general, that is, the RealPresence Collaboration Server system. However, when information applies to a specific edition, the reference will be specific, that is, RealPresence Collaboration Server, Virtual Edition or RealPresence Collaboration Server, Appliance Edition.