<ul><li>This article discusses validation, authentication, and authorization in building a CRUD API with express.</li><li>The importance of validating user data and the potential security risks of not doing so are highlighted.</li><li>Authentication involves verifying a user's identity, usually by checking their credentials.</li><li>Authorization involves determining what actions a user can and cannot perform on a platform, often determined by their level of access or permissions.</li><li>The author provides validation rules for name, amount, and date, as well as functions to implement them.</li><li>For authentication, the article shows how to create and log in users with email and password credentials, and generate authorization tokens.</li><li>To protect endpoints, the article demonstrates how to decode and verify a user's auth token and filter data based on their userId.</li><li>The article concludes by cautioning not to save raw passwords and mentions further topics to explore.</li></ul>

Validation, Authentication and Authorization

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