Flask

Definition

Flask is a micro web framework for Python: a few decorators for routing, no opinions about ORM or templating. It is the easiest way to stand up an HTTP endpoint to receive a webhook, expose a small API, or run an internal admin tool. For typed-async workloads most teams now reach for FastAPI instead.

When to use

See also

• webhook — An HTTP POST sent by one system to a URL on another system when an event occurs — push, not poll.
• API — A formal contract that lets one software system call functions or fetch data from another, usually over HTTP.