OpenAPI is a specification for describing HTTP-based APIs, most notably RESTful APIs.

Swagger is a term that refers to a set of tools by SmartBear. It used to refer to the OpenAPI specification itself and is sometimes still used that way.

Describing APIs by writing a definition (a YAML file) allows you to leverage tools to automate a lot of API-related processes.

OpenAPI is useful for consumers, producers, and API designers. Each can benefit from knowing and utilizing tools that consume OpenAPI definitions.

We will explain how to work with OpenAPI. With this knowledge base, you can ultimately incorporate OpenAPI into your team and organization workflows.