After many years of working on HTML5 support, YouTube has decided to use their HTML5 video player as the default for modern browsers, using the old Flash-based player only for legacy browsers. Using MPEG-DASH and W3C Media Source Extensions, YouTube can use Adaptive Bitrate streaming to reduce buffering and improve initial playback speed.
Amazon has made available the AppStream service which enables developers to run an application on AWS, then stream it to various devices.
Microsoft has closed its two-year-old hosting service, Silverlight Streaming. Existing videos can still be retrieved for the time being, but new ones can no longer be uploaded. They have also discontinued the related publishing plug-in for Expression Encoder.