Back in the prehistoric ages, Neanderthals resorted to cave drawings to tell bedtime stories or to announce marriages. Microsoft PowerPoint is the modern-day equivalent of cave art; the objective remains unchanged, but its efficiency can be questionable.
Server-hosted delivery of client applications is hardly new. Whether it was Microsoft Windows Terminal Services back in 1996 or the Remote Desktop Services of today, it has been around for a while now. With client virtualization, boundaries of traditional networks are done away with to allow rich client applications and environments to endpoints.