This document discusses four patterns for integrating eCommerce and content management systems: commerce-led, content-led, hybrid, and headless. It provides an overview of each pattern, examining their organizational, consumer, and technological impacts. A commerce-led pattern involves the eCommerce system delivering the primary experience and incorporating content from a CMS. A content-led pattern has a CMS front the consumer experience and integrate an eCommerce API. The document aims to help readers select the best integration model for their needs.