Divi has been designed to be WooCommerce compatible. To integrate WooCommerce you will need to install the latest version of WooCommerce.
WooCommerce is the plugin that we recommend, as it has the nicest feature set, interface and follows the best coding practices. After you enabled the plugin, you will see a new “WooCommerce” and “Products” section has been added to your WordPress Dashboard. You can use these areas to adjust your eCommerce settings and publish new products. You can find full documentation on WooCommerce here.