What is WooCommerce?
WooCommerce is an open-source ecommerce plugin that turns a WordPress site into a full online store. Because it runs on WordPress — the software behind roughly 43% of the web — it combines content management and commerce in a single admin. The core plugin is free, and stores built with it range from a handful of products to large, complex catalogs.
Its core appeal is ownership: you control the code, the data, and the hosting environment rather than renting a storefront from a SaaS vendor.
WooCommerce is a free, open-source ecommerce platform distributed as a WordPress plugin. Once activated, it adds product management, cart and checkout, payment and shipping options, and order administration to an existing WordPress installation. Functionality is extended through an official marketplace of free and paid extensions, and the codebase can be audited or modified by anyone.
Stores can be as simple as a few physical products or as complex as subscription, membership, and wholesale operations.

