PHP 7.3 reached end of support in December 2021 and Adobe Commerce 2.3.x reaches end of support in September 2022. You may want to consider planning your upgrade now to Adobe Commerce 2.4.x and PHP 7.4.x to help maintain PCI compliance.

Architecture Guide

The Architecture Guide provides a high-level introduction and view of the Magento product.

The Magento platform and components are explained from the perspective of several audiences: merchants, web store developers (frontend developers), extension developers, system admins, installers, and integrators.

More detailed information about building online stores, using the Magento APIs, installing, configuring, and extending the platform is included in other books in our Magento library.