(From "World-Wide Web" and "broadcast") Multicasting on the Internet. Webcasting implies real-time transmission of encoded video under the control of the server to multiple recipients who all receive the same content at the same time. This is in contrast to normal web browsing which is controlled from the browser by individual users and may take arbitrarily long to deliver a complete document.

Pointcast is the most popular service to date which uses webcasting, however, Microsoft and Netscape have products planned.