Magento 2.0.18 is the final 2.0.x release. After March 2018, Magento 2.0.x will no longer receive security patches, quality fixes, or documentation updates.
To maintain your site's performance, security, and PCI compliance, upgrade to the latest version of Magento.

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.