User Datagram Protocol (UDP)
User Datagram Protocol (UDP) is a communications protocol used across the internet for time-sensitive transmissions such as video playback or DNS lookups. UDP is a part of the Internet Protocol suite, and it allows data to be transferred without establishing a formal connection between sender and receiver. This makes UDP faster but less reliable than TCP, as it does not guarantee delivery, order, or error checking, making it suitable for applications where speed is critical, and occasional data loss is acceptable.