Angular 21 tutorial in Hindi #48 What is API? Frontend & Backend Connection #angular21

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In this video, we explain What is API (Application Programming Interface) in Hindi with real-world examples.
You will understand why API is important, how frontend and backend communicate, and why Angular, React, or Vue cannot directly connect to a database.

Topics Covered:
What is API? (Definition in simple words)
Why API is required in Angular & React
Frontend vs Backend explained
Why JavaScript runs in browser, not server
API flow: Database Backend Frontend

JSON format explained
Why APIs are used for Web + Mobile Apps
Common API interview questions

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