Shopify Plus is Shopify's enterprise-level e-commerce platform. It offers businesses more scalability, customization, advanced features, priority support, enhanced security, international expansion capabilities and higher revenue and sales limits. It's designed for high-volume and fast-growing businesses, and includes features such as custom checkout, scripts, and APIs. Additionally, Shopify Plus merchants have access to a larger and more exclusive pool of Shopify Plus-approved partners and apps, and dedicated Merchant Success Manager, 24/7 support and priority service level agreements.