FastAPI is a high-performance web framework for building HTTP-based service APIs in Python 3.8+.

FastAPI also automatically generates OpenAPI documentation for APIs built with it.

[5] Starlette is a lightweight ASGI framework/toolkit, to support async functionality in Python.

[6] Uvicorn is a minimal low-level server/application web server for async frameworks, following the ASGI specification.

[8] The following code shows a simple web application that displays "Hello World!"