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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 👉 Subscribe for more Tamil tutorials on AI, APIs, and Cloud: https://www.youtube.com/@appliedwithai 🌐 Website: https://www.appliedwithai.in #FastAPI #APITutorialTamil #GoogleCloudRun #AppliedWithAI