Webinar

A group of people viewing a seminar presented over the Web, sometimes with limited audience interaction.
A seminar conducted through the Internet

Sources:

⠀ Dictionary of computer and Internet terms / Douglas A. Downing, Michael A. Covington, Melody Mauldin Covington. — 10th ed. – 561 c. – 532

⠀ Dictionary of Computer and Internet Terms (Vol. 1) John C. Rigdon, 2016 – 1471 c. – 1406