Magento Open Source 2.2.x

Magento 2.2.x Notice: As outlined by the Magento Software Lifecycle Policy, Magento 2.2.x has reached the End-of-Support and will no longer receive quality fixes or documentation updates. To maintain your site's performance, security, and PCIPayment Card Industry: Refers to debit and credit cards and their associated businesses. compliance, upgrade to the latest version of Magento.

The online Magento 2.2.x User Guide is scheduled for removal, but will remain available in PDF for Open Source, Commerce, and Commerce for B2B.

Magento Web API

Stores > Settings > ConfigurationServices > Magento Web APIApplication Program Interface: A software interface that lets third-party applications read and write to a system using programming language constructs or statements.