OAS 3.0 brings reusable components to API definitions.
Reusable components allow you to use an element in several parts of your API, without having to define it multiple times.
If you need to reuse the same header in ten different operations, you can create a component, and then refer to the component in all the operations where it is needed. Then, if you need to edit the header, you do not need to do it in all ten operations. You can simply modify the component, and the change is automatically propagated to all the elements that use it.
The following components are supported:
- Path variables
- Query parameters
- Headers
- Responses
Components are visible in the COMPONENTS tab in the left panel.