FastAPI

FastAPI is an open-source backend framework for Python projects. It is available on the web and is intended for self-hosted deployment, so teams can run it in their own environment. Built-in authentication is included, while an ORM is not. That distinction matters for projects whose data layer depends on object-relational mapping: the framework does not bundle that component. FastAPI is free, with a free plan. Its stated focus is backend development, and Python is its primary language. For developers comparing backend frameworks, its listed fit points are a Python focus, an open-source license, self-hosting, and built-in authentication. The facts describe no other framework type or deployment target, so teams considering a different application scope should account for that narrower listed focus. The website is fastapi.tiangolo.com.

FastAPI's listed strengths are its Python backend focus, built-in authentication, and self-hosted deployment. The lack of an included ORM is worth considering when planning a project’s stack.

FastAPI suits developers building Python backend projects who want an open-source framework for self-hosted deployment. It may fit teams that need built-in authentication and do not require an included ORM.