Folder Structure

Primary Directories

• app/ — Magento application code, custom modules and themes
• bin/ — Magento CLI binary
• dev/ — Development tools and test scaffolding
• generated/ — Auto-generated code and metadata
• lib/ — Internal Magento libraries and framework internals
• patches/ — Patch files applied to vendor modules/packages
• phpserver/ — PHP built-in server router/config helpers
• pub/ — Public web root and browser-accessible assets
• setup/ — Setup, installer and schema tooling
• var/ — Runtime cache, logs, sessions and transient data

Important Root Files

• .htaccess
• .user.ini
• deploy.sh
• Gruntfile.js.sample
• grunt-config.json.sample

Operational Notes

• generated/ should be treated as build/runtime output.
• var/ should be treated as runtime output (cache/log/session).
• patches/ includes multiple production-relevant fixes, including rewards, braintree/paypal, USPS, and security-related composer patching.