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Arunkumar
Arunkumar

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🔐 Authentication vs Authorization

🧑‍💻 Authentication

  • Defines: Who you are
  • Purpose: Verify identity
  • Happens: Before authorization
  • Examples:
    • 🔑 Entering username & password
    • 📲 Logging in with Google
    • 🔍 Scanning fingerprint

🛂 Authorization

  • Defines: What you can do
  • Purpose: Control access
  • Happens: After authentication
  • Examples:
    • ✅ Access to admin dashboard
    • 🚫 Restricting users from editing content
    • 📂 Viewing certain files

💡 Think of It Like This

🏛️ Authentication = Showing your ID at the door

🚪 Authorization = Which rooms you're allowed to enter


Both work together to keep apps and data secure.

Without one, the other can't function effectively.

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