What Does Two-Way Communication Mean?

Two-way communication is a general term in IT used for messaging systems in which two parties transmit information to each other. The idea of two-way communication has changed with major advances in communication and messaging technologies.

Techopedia Explains Two-Way Communication

Some forms of two-way communication are text based, whereas others are audio or voice based. For example, telephone conversations and video IP connections are two-way communications, but so are instant messaging and computer chat rooms, as well as older analog technologies like CB or ham radio.