Craft Commerce is an e-commerce plugin for Craft CMS.
Craft Commerce gives web developers an enjoyable platform to build hand-crafted e-commerce solutions, while also delivering an easy to use administration control panel for users. Using the power and flexibility of Craft CMS, designers and developers can build rich e-commerce experiences.
{tip} Do yourself a big favor, and learn Craft CMS before embarking on a Craft Commerce project. Reading the Craft CMS documentation first will also make it easier to understand the Craft Commerce documentation.