When we reach for it
Serving models and data-science work behind a real HTTP interface, where the alternative is a script somebody runs by hand and the documentation is a message in a chat thread.
Web and application frameworks
FastAPI development
A modern Python framework that derives request validation and an OpenAPI document from type annotations, so the API contract and the code cannot drift apart.
When we would argue against it
It is a good API layer, not an application framework. If the system needs an admin, an ORM and auth, Django is less work than assembling the same thing underneath FastAPI.
What it looks like in delivery
The usual shape is a thin FastAPI layer in front of a model or a pipeline, with the evaluation harness behind it and the resulting OpenAPI document treated as the contract every other team codes against.
Where this appears on the site
Nothing on this site names it yet
We work in FastAPI, and no case study or service page currently published on this site prints it in its stack. Rather than describe an engagement you cannot check, this space stays empty until one does. Ask us and we will talk you through it directly.
Working in FastAPI?
Tell us what it is running, what it costs you today, and what you need it to do next. A senior engineer will tell you what we would keep and what we would change.