We have already went through on how to configure integration and utilize Magento apis. But let’s see how to make our own module with custom API calls.
Magento 2 supports REST (Representational State Transfer) and SOAP (Simple Object Access Protocol), much like the old version of Magento we were used to. Official documentation is mostly based on raw curl request without examples in some specific language. PHP is what we do and there will be many people using it as well, so we tried to give you real PHP examples of how to connect and use Magento 2 API.