Network engineers can kiss traditional WAN design and management goodbye as branch offices are increasingly connecting directly to the Internet for cloud application connectivity. Thanks to mobile devices and an increase in teleworkers, IT must find ways to secure and accelerate the way these users access corporate resources from a wide variety of wired and wireless endpoints. Managing this geographically challenging network is even more complex because IT needs to provide access to virtual data center applications and cloud services to different groups of end users. This handbook looks at how to design and manage the new endpoint-driven network and extend secure access to private and public cloud services and virtual applications.