UDP's stateless nature is also useful for servers that answer small queries from huge numbers of clients. Unlike TCP, UDP is compatible with packet broadcast (sending to all on local network) and multicasting (send to all subscribers). UDP is part of the TCP/IP protocol suite. UDP is a simpler message-based connectionless protocol.

The User Datagram Protocol, or UDP for short, is a protocol that allows datagrams to be sent without connection in IP-based networks. To achieve the desired services on the target hosts, it uses ports that are listed as one of the core components in the UDP header. UDP Wireshark Analysis – Linux Hint The basic reason is, UDP is a connection less protocol unlike TCP. So this feature makes UDP faster than TCP. But UDP suffers from the strong reliability unlike TCP. So, in conclusion when you can compromise some percentage in reliability but really wanted more speed, UDP … UDP Protocol with Wireshark - Infosec Resources As shown, UDP uses the same port model as TCP, and applications that use both TCP and UDP will often use the same ports in each. The UDP packet header also includes a length value and a checksum for verifying the accuracy of the data that it contains. UDP analysis for incident response. UDP is primarily intended for carrying other types of traffic.

TCP vs UDP - How are they Different? Explained in Simple Terms

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UDP Port Scanner, Online UDP Port Scan, UDP Port Scanning