Authentication is the process of determining whether someone or something is, in fact, who or what it is declared to be.

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Tokens-based authentication is more relevant than ever. Examine the differences and similarities between cookie and token-based authentication, advantages of using tokens, and address common questions and concerns developers have regarding token-based auth.


In the beginning, things were simple: you had two strings (a username and a password) and if someone knew both of them, they could log in. Easy.