PHP 7.3 reaches end of support in December 2021 and Adobe Commerce 2.3.x reaches end of support in April 2022. We strongly recommend planning your upgrade now to Adobe Commerce 2.4.x and PHP 7.4.x to help maintain PCI compliance.

Magento_Webapi

Webapi provides the framework for the application to expose REST and SOAP web services. It exposes an area for REST and another area for SOAP services and routes requests based on the Webapi configuration. It also handles deserialization of requests and serialization of responses.