Front-End Development Trends in 2025: What Every Developer Should Know
27 August 2025
API Authentication Explained: Keys, Tokens, and OAuth
APIs often expose sensitive data, so authentication is crucial to protect systems from misuse.
Common API Authentication Methods:
- API Keys → Unique identifiers that allow apps to connect.
- Bearer Tokens → Secure, time-limited tokens for requests.
- OAuth 2.0 → Widely used for third-party login (Google, Facebook, GitHub).
- JWT (JSON Web Tokens) → Compact, encrypted tokens often used in modern apps.
Authentication ensures only authorized users and apps can access protected resources. For developers, understanding these methods is essential for building secure and reliable web applications.
