When reading articles online, you'll often hear the terms Swagger and OpenAPI used interchangeably. So, before we continue, let's clarify these terms. Swagger began in 2011 as a set of tools that allow developers to represent API as code, in order to automatically generate documentation and client SDKs. Swagger has since undergone two major versions (1.0 and 2.0). After the release of Swagger 2.0, the rights to Swagger were bought by SmartBear Software, who decided to donate the rights of the specification format to the Linux Foundation, under the OpenAPI Initiative.
On 1 January 2016, the Swagger specification was renamed to the OpenAPI Specification (OAS). Since then, a newer version, 3.0.0 of OAS, has been released. ...
