Welcome to Part 20 of the Google Cloud Functions Training series! In this session, we’ll focus on Token Validations, ensuring that only authenticated and authorized requests can access your serverless functions. We’ll integrate Firebase Authentication with Cloud Functions to verify ID tokens and safeguard backend operations.

✅ What You’ll Learn in This Video:
✔️ How Firebase issues ID tokens on successful authentication
✔️ Verifying tokens inside Cloud Functions using the Admin SDK
✔️ Handling expired, invalid, or missing tokens gracefully
✔️ Restricting access to authenticated users only
✔️ Preparing for role-based authorization and advanced security layers

💡 Why This Step Matters:
🔹 Protects sensitive APIs and backend resources from unauthorized access
🔹 Ensures trust between your frontend app and backend services
🔹 Forms the foundation for role-based access and fine-grained permissions
🔹 Builds user confidence with secure authentication practices