What is video conferencing?

Video conferencing is a technology through which three or more people can exchange audio and video broadcasts.
The video conferencing market has grown strongly in the spring of 2020 due to the massive transition to remote work around the world.

Types of video conferencing:
Video conferencing comes in different forms and serves different purposes. Let's analyze the most common options - how they differ from each other and what areas of application they have.

Video conferencing:
This is the most common type of video call - when everyone's cameras and microphones are turned on, respectively. Simply put, all participants in a video conference have the same rights. Typical applications in corporate communications are briefings, personal product demos, customer support.

Online lecture:
This is a type of video conferencing that is great for universities in a pandemic. The teacher has a camera and microphone on, as a rule, they demonstrates the screen, while students, with the camera and microphone on, have a picture of only the teacher who sees them.

What are the advantages of this particular video conferencing pattern?
Students are not distracted by video from each other's webcams and can fully concentrate on the material. One of the use cases for this technology is implemented in our school education. Convenience is that several virtual classrooms are created (8B, 9C, 10A, etc.), to which students are connected in the morning. Teachers take turns in these rooms according to their usual schedule.

Telepresence:
Telepresence simulates being in an office or somewhere else. For clarity, the offices are empty, but people are most productive in the familiar environment, so managers transfer employees to virtual offices - rooms that employees enter at the beginning of the working day, turn on the video, and turn off the microphone.
What are the advantages of this approach to organizing a remote office?
People do not change their habits, starting new ones, so that in a few weeks, when the restrictions are lifted, they can change again.
Webinars:
A massive event, in which, as a rule, one presenter with included video and audio broadcasts to a large audience who communicates with him via chat. Suitable for large-scale product demonstrations or as a tool in private online education.

Selector video communication:
This is a special type of video conferencing — in this use case there are one or more hosts that turn audio on or off for selected participants. Selector video communication is used, as a rule, at meetings or scheduled calls, when the manager interrogates his subordinates.

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