You are browsing the documentation for version 3.1 of OroCommerce, OroCRM and OroPlatform, which is no longer maintained. Read version 5.1 (the latest LTS version) of the Oro documentation to get the updated information.
See our Release Process documentation for more information on the currently supported and upcoming releases.
OroCommerce back-office, OroCRM, and OroPlatform are single-page applications (SPA) with a mix of server-rendered content with Twig templating engine and client rendered content with Underscore.js. You can customize it with themes, override SCSS Styles, Twig, and Underscore.js templates and extend parts of a page with placeholders.
This tutorial describes how to customize OroPlatform layout and OroCommerce back-office layout.