Webinar is short for Web-based seminar. A Webinar is just like a conference room based seminar, however, participants view the presentation through their Web-browser and listen to the audio through their telephone. A key feature of a Webinar is its interactive elements -- the ability to give, receive and discuss information. Contrast with "Webcast", in which the data transmission is one way and does not allow interaction between the presenter and the audience.

Webinar's are primarily used to train a large number of people or build brand and generate sales leads. Additional uses are: corporate announcements, focus groups, and press conferences.

Reach a larger audience
Reduce cost
Digitally record and allow future playback.

A computer
Internet access
A phone line for listening to the teleconference portion.