Ans. No, we never make changes to the core files of WooCommerce. We always follow best guidelines which are governed by the WooCommerce. WooCommerce Multi Vendor Marketplace Plugin is coded on top of WooCommerce systems and following standard way of WooCommerce application programming. WooCommerce Multi Vendor Marketplace module is as scalable as your WooCommerce which means it will not affect your existing store performance and will support all your standard WooCommerce cache handlers.