In IT world, authentication is a process of verifying a user’s identity. Identifying the user is usually done by username and password. It is a process followed by authorisation, when it is decided if user gets the access into desired source.
Example
An employee wants to log in into a working group. He provides his username and password. This data is compared with the information stored in the company’s database to see if it matches or not. This process is authentication.
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