UDP and TCP are both transport protocols used for communication between different hosts. They’re part of the transport layer in the broadly-known OSI model. The transport layer is responsible for delivering data to the correct application processes over a network.

UDP and TCP combined together contribute to pretty much all traffic on the Internet no matter if you’re watching a movie on Netflix, browsing the web or checking your banking app.

Although both UDP and TCP are ultimately used for the same purpose (communication) there are many differences between them.

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