What is an API? REST API Explained | How APIs Work, HTTP Methods & API Gateway

What exactly is an API, and how do applications communicate with each other? In this video, we break down APIs (Application Programming Interfaces) in a simple, practical and technical way. You’ll learn how an API works from the moment a client sends a request until the server returns a response. 🚀 What You’ll Learn 00:00 — What is an API? 00:40 — API explained with a real-world example 01:35 — How an API works: Client → API → Server → Database 02:35 — API requests and responses 03:25 — HTTP methods: GET, POST, PUT, PATCH & DELETE 04:10 — HTTP status codes: 200, 201, 400, 401, 403, 404 & 500 05:05 — What is a REST API? 06:00 — API Authentication & Authorization 07:00 — What is an API Gateway? 08:00 — API vs Web Service vs REST API 09:00 — APIs in Cloud Architecture 10:00 — Key takeaways 🔥 Topics Covered • API fundamentals • REST API • HTTP / HTTPS • API request and response • HTTP methods • HTTP status codes • JSON • API authentication • API authorization • API keys • OAuth 2.0 • JWT • API Gateway • Microservices • Cloud architecture • Client-server communication Whether you’re learning Networking, Cloud Computing, DevOps, Microservices, System Design or preparing for technical interviews, understanding APIs is an essential foundation. If you found this video useful, Like 👍, Share and Subscribe for more practical videos on networking, cloud, APIs, system architecture and technology. #API #RESTAPI #APIGateway #WebDevelopment #CloudComputing #Networking #Microservices #DevOps #SystemDesign #SoftwareArchitecture