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Introduction to FastAPI - Build High-Performance Python APIs - Featured image for blog post about FastAPI tutorial for beginners

Introduction to FastAPI - Build High-Performance Python APIs

Atharva Naik/January 17, 2026/1 min read

FastAPI is a modern Python web framework designed for building fast, scalable, and production-ready APIs. This post will introduce you to the basics of FastAPI and explain why it is a great choice for backend development.

What is FastAPI?

FastAPI is a Python framework built on top of Starlette and Pydantic that allows developers to create APIs with minimal code and maximum performance. It supports asynchronous programming by default and provides automatic validation for request and response data.

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
def read_root():
    return {"message": "Hello, FastAPI!"}

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