HTML5 Is the Future, Says Microsoft
Hachamovitch stated that "The HTML5 specification describes video support without specifying a particular video format. We think H.264 is an excellent format. In its HTML5 support, IE9 will support playback of H.264 video only."
Microsoft was totally negative about Flash, stating that "Flash does have some issues, particularly around reliability, security, and performance. Despite these issues, Flash remains an important part of delivering a good consumer experience on today's web."