FastAPI

FastAPI is a modern Python web framework for APIs, based on Starlette and Pydantic, emphasizing speed, async support, and auto-generated docs with OpenAPI.

It's ideal for data/ML-heavy backends.

Use FastAPI when:

• Building async APIs with Python.
• Needing auto Swagger docs.
• Validating with Pydantic models.
• High-perf ML endpoints.

Note: Use Depends for DI.

Run with uvicorn --reload.

Integrate SQLAlchemy async.