Transmission Control Protocol (TCP) is a primary source of transporting protocols used on IP networks. The purpose of the acceleration is to overcome protocol failures (TCP or application). Indeed, many applications have been created for use on a Local Area Network (LAN) and are now used over wide area networks (WAN).

However, these applications exchange a lot of information between the client and the server and therefore depend on the transfer times. The primary objective of TCPacceleration is to device means of reducing the number of network round trips necessary for the operation of the application.

http://wanos.co/wan-optimization/tcp-acceleration-pep/