What is a webcast?

A webcast is indeed defined as a broadcast of an event or a recording of an event over the world wide web. This definition encompasses the essential characteristic of webcasts, which is their delivery of audio and video content via the internet, allowing audiences to participate in or access the content from virtually anywhere.

Webcasts can include live events, such as conferences or webinars, as well as pre-recorded sessions that can be shared on-demand. This flexibility in format is a major reason why webcasts have become a popular method for organizations to reach large audiences, provide training, or share information.

While the other choices touch on related concepts, they don't encapsulate the broader meaning of a webcast. For instance, a type of web-based seminar refers specifically to webinars, which are indeed a form of webcast but do not represent the full range of what a webcast can be. A personal online journal describes a blog, and a tool for managing customer relationships refers to Customer Relationship Management (CRM) software, neither of which fits the definition of a webcast.