It just extends OAuth2 specifying some things that are relatively ambiguous in OAuth2, to try to make it more interoperable.

For example, Google login uses OpenID Connect (which underneath uses OAuth2).

But Facebook login doesn't support OpenID Connect. It has its own flavor of OAuth2.

### OpenID (not "OpenID Connect")

There was also an "OpenID" specification. That tried to solve the same thing as **OpenID Connect**, but was not based on OAuth2.

**Kaynak Kod**: <a href="https://github.com/tiangolo/fastapi" target="_blank">https://github.com/tiangolo/fastapi</a>

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FastAPI, Python 'nin standart <abbr title="Tip Belirteçleri: Type Hints">tip belirteçleri</abbr>ne dayalı, modern ve hızlı (yüksek performanslı) API'lar oluşturmak için kullanılabilecek web framework'tür.

Temel özellikleri şunlardır:

## What is "Dependency Injection"

**"Dependency Injection"** means, in programming, that there is a way for your code (in this case, your *path operation functions*) to declare things that it requires to work and use: "dependencies".

And then, that system (in this case **FastAPI**) will take care of doing whatever is needed to provide your code with those needed dependencies ("inject" the dependencies).

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FastAPI is a modern, fast (high-performance), web framework for building APIs with Python based on standard Python type hints.

The key features are:

* **Fast**: Very high performance, on par with **NodeJS** and **Go** (thanks to Starlette and Pydantic). [One of the fastest Python frameworks available](#performance).

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FastAPI é um moderno e rápido (alta performance) _framework web_ para construção de APIs com Python, baseado nos _type hints_ padrões do Python.

Os recursos chave são:

* **Rápido**: alta performance, equivalente a **NodeJS** e **Go** (graças ao Starlette e Pydantic). [Um dos frameworks mais rápidos disponíveis](#performance).

**Qaynaq Kodu**: <a href="https://github.com/tiangolo/fastapi" target="_blank">https://github.com/tiangolo/fastapi</a>

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FastAPI Python ilə API yaratmaq üçün standart Python <abbr title="Tip Məsləhətləri: Type Hints">tip məsləhətlərinə</abbr> əsaslanan, müasir, sürətli (yüksək performanslı) framework-dür.

Əsas xüsusiyyətləri bunlardır:

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FastAPI là một web framework hiện đại, hiệu năng cao để xây dựng web APIs với Python dựa trên tiêu chuẩn Python type hints.

Những tính năng như:

* **Nhanh**: Hiệu năng rất cao khi so sánh với **NodeJS** và **Go** (cảm ơn Starlette và Pydantic). [Một trong những Python framework nhanh nhất](#hieu-nang).