In which scenarios is the UDP protocol used?

The UDP protocol (User Datagram Protocol) is used in scenarios where speed of data transmission is crucial and some packet loss is acceptable, as well as when connection establishment and delivery confirmation are not required.

Typical use cases of UDP:

• Video conferencing and VoIP — where delays are more critical than losing individual packets.
• Online gaming — for fast transmission of game data.
• DNS queries — short requests and responses, where latency is more important than reliability.
• Media streaming (streaming) — where continuous flow is important.

UDP does not guarantee delivery, order, or integrity of data, making it lighter and faster compared to TCP.