Authentication is the process of verifying the identity of a user, device, or other entity attempting to access a system or resource. It answers the question 'Who are you?' Common methods include passwords, multi-factor authentication (MFA), and biometric verification. Authorization, on the other hand, determines what an authenticated user is allowed to access or do within the system. It answers the question 'What are you allowed to do?' It involves assigning roles and permissions to users, controlling their access to specific resources and functionalities. Together, authentication and authorization ensure secure access control in computer systems and applications.
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