Pros & Cons of FastAPI
One of the most exiting feature of FastAPI is its support for async/await. With FastAPI you can write asynchronous code out of the box. A welcoming feature to the Python framework ecosystem which is usually synchronous in nature.
OAuth 2.0 support
FastAPI integrates well with OAuth 2.0 and external providers.
Limited educational resources
Since FastAPI is relatively new framework, the community is quiet small. Even though FastAPI provides great documentation and a wide variety of example projects, it can be hard to find external educational information like books, course and tutorials.
GraphQL support with graphene-python
With FastAPI it's easy to build a GraphQL API with the help of the python library graphene-python.