Direct answer
What is Authentication?
- Short definition
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Authentication means checking that a user is who they say they are. It often uses passwords, login codes, tokens, or social login.
- Why it matters
- Good login security protects private data and keeps the wrong people out. It also helps users trust the app.
How teams use Authentication
Use this term when you need to describe the practical role it plays in a software project.
Common use cases
- User login with email and password
- Social login via Google or GitHub
- API access using tokens
- Multi-factor authentication for sensitive operations
Examples of Authentication
These examples show the term in everyday product, platform, or operations work.
Real-world examples
- User registering and logging in with email and password
- Laravel Sanctum issuing tokens for mobile app access
- OAuth flow for GitHub login on third-party apps