Which of the following is considered a webcasting vendor?

On24 is recognized as a webcasting vendor because it specializes in providing virtual event solutions, webinars, and webcasting services that facilitate live and on-demand video content. Their platform is designed specifically for hosting large-scale online events and generating engagement through features such as interactivity, analytics, and integration with marketing tools. This positions On24 as a leader in the webcasting space, uniquely focusing on delivering high-quality virtual attendee experiences.

In contrast, platforms like Zoom, Microsoft Teams, and Skype are primarily designed for video conferencing and collaboration, rather than specifically tailored for webcasting large events. They serve different purposes within the realm of online communication and meetings, which differentiates them from On24's specialized webcasting services.