Networking - What is the User Datagram Protocol (UDP)?

What is the User Datagram Protocol (UDP)?

User datagram protocol allows computer applications to send messages as datagram packets from source to destination on an Internet Protocol, with out using prior communications for setting up special transmission paths. An unreliable service is provided by UDP which makes the datagram packets may arrive irrespective of order. UDP is a better solution for time-sensitive applications due to the reason ‘dropping packets is preferable to use delayed packets’. Its stateless nature makes the server to answer smaller queries to huge number of clients.
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