All other Wan Optimization solutions have one thing in common: Extraordinary price tags that force IT Managers to select the guarantees of bandwidth upgrades over the promises of Wan Optimization:
Wan Optimization works is by placing virtual or physical appliances in the network traffic flow path. Network traffic from the Internet, public cloud, private cloud or data center are reduced by compression and deduplication.
Reducing the traffic volume over the WAN is complemented with Quality of Service to ensure applications get the most optimal class of service.
If you want to know more please visit here: http://wanos.co/wan-optimization/