Does not include the overhead needed to detect reliability and maintain connection-oriented
semantics
UDP packets require considerably less processing at the transmitting and receiving
hosts
Does not maintain the illusion of a data stream
packets can be transmitted as soon as they are sent by the application instead
of waiting in line behind other data in the stream; similarly, data can be delivered
to the application as soon as it arrives at the receiving host instead of waiting
in line behind missing data
Less heavy to manage for the OS
Many operating systems impose limits on how many simultaneous TCP/IP connections
they can support.
Operating system does not need to keep UDP connection information for every
peer host, UDP/IP is more appropriate for large-scale distributed systems where
each host communicates with many destinations simultaneously