WooCommerce is an open-source e-commerce plugin for WordPress that turns an existing WordPress website into an online shop. It is extended with add-ons for payments, shipping and other functions, from WooCommerce or third parties. The core software runs on the merchant's own WordPress environment, so the shop operator chooses where store data is kept.
WooCommerce is developed by WooCommerce, Inc., part of Automattic, Inc., a company headquartered in San Francisco. Because the core runs on the shop's own infrastructure, a European organisation keeps control over where its store data is located. Payment services, extensions and any hosted services from WooCommerce.com have their own processors, however, and their locations need to be checked separately. The US parent group is therefore relevant to any services it operates.