!!! Overview[1]
[{$pagename}] is defined in [RFC 1594] as a self-contained, independent [entity] of [data] carrying sufficient information to be routed from the source to the destination computer without reliance on earlier exchanges between this source and destination computer and the transporting network.


[{$pagename}] must be self-contained without reliance on earlier exchanges because there is no connection of fixed duration between the two communicating points.

[{$pagename}] service routes datagrams without first creating a predetermined path. [{$pagename}] service is therefore considered connectionless. There is also no consideration given to the order in which it and other datagrams are sent or received. In fact, many datagrams in the same group can travel along different paths before reaching the same destination

[User Datagram Protocol] ([UDP]) is run by a datagram service in the [Internet Protocol] which is an entirely connectionless, best effort, unreliable, message delivery service.

!! [{$pagename}] and [Packet]
[{$pagename}] and [Datagram] are generally the same. Some folks will be define a [packet] as any [data] on a [Reliable protocol] or [Unreliable protocol] where a [Datagram] is used only on a [Unreliable protocol]. We generally see the two used interchangeably.

!! More Information
There might be more information for this subject on one of the following:
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* [#1] - [Datagram|Wikipedia:Datagram|target='_blank'] - based on information obtained 2017-04-01-