This document provides an overview of virtual reality, including definitions of VR and how it differs from augmented reality. It discusses the VR market and ecosystem, including major investments from companies like Facebook, Google, and Magic Leap. The biggest VR markets are expected to be gaming, healthcare, and engineering. Example VR applications mentioned include tourism, automotive, media, sports, and more. The document also introduces the BE.VR community in Belgium for those interested in VR.