Table of contents Developer's Documentation 🚀Getting Started Installation Headless Commerce 💻API Storefront API Platform API 🎨Storefronts Next.js Commerce Vue Storefront ⚙️Internals Stores Products Orders Payments Shipments Promotions Inventory Taxation Addresses Adjustments Calculators Preferences 🛠Customization Dependencies Business Logic Storefront API Checkout Authentication Permissions Images Internationalization Storefront Emails 🌏Deployment Vendo AWS Heroku Performance 🔑Security General guidelines API PCI Compliance Authentication & authorization ⏩Upgrades How to perform upgrades Upgrade guides 4.3 to 4.4 4.2 to 4.3 4.1 to 4.2 4.0 to 4.1 3.7 to 4.0 3.6 to 3.7 3.5 to 3.6 3.4 to 3.5 3.3 to 3.4 3.2 to 3.3 3.1 to 3.2 3.0 to 3.1 2.3 to 2.4 2.2 to 2.3 2.1 to 2.2 2.0 to 2.1 1.3 to 2.0 1.2 to 1.3 1.1 to 1.2 1.0 to 1.1 🎁Extensions Extensions Creating an extension Advanced Adding Spree to an existing Rails application Deface ❤️Contributing General guidelines Developing Spree Upgrading extensions ✨Releases Notes Releases Changelog 🤝Support Core Team support Slack Community