One of the important aspects of VDI is the protocol used to deliver the remote desktop to the end user. An important part of the protocol is the graphics capabilities. Most VDI vendors can use RDP, but the top vendors have specific protocols - VMware has PC-over-IP, Citrix has ICA, and now Microsoft has RemoteFX (formerly Calista). So, how is RemoteFX different than RDP? That is a question Tad Brockway answers in a recent article titled "Microsoft RemoteFX: The problem we are solving..." In this article, Tad explains client-centric remoting, host-centric remoting, graphics primitives, and how it all fits together.