API - Step by Step - Build, Secure and Deploy | Full Practical Guide
Learn how to build your first API from scratch using FastAPI in Tamil!
In this end-to-end tutorial, we’ll start from “What is an API?”, move on to creating your own Python API, securing it using API Keys, testing it with Postman, and finally deploying it to Google Cloud Run so it’s accessible worldwide!
00:00 Intro
00:45 Members Update
01:10 What is an API
02:49 HTTP GET & POST
04:00 Enterprise APIs
05:21 Consume a GET API
08:08 Consume a POST API
11:03 Build your GET API
15:51 Build your POST API
18:16 Test using POSTMAN
20:05 Secure an API with API Key
22:04 Deploy to Google Cloud
28:34 What Next?
Topics Covered:
✅ What is an API?
✅ Building APIs using FastAPI (Python)
✅ Adding API Key Authentication
✅ Testing with Postman
✅ Deploying to Google Cloud Run
✅ Real-world API Concepts for Enterprise Developers
After this video, you’ll clearly understand the entire API development workflow — from code to cloud!
Next Steps:
🔸 Learn Authentication (OAuth2, JWT)
🔸 Error Handling & Logging
🔸 API Gateway, Rate Limiting & Monitoring
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