To measure the success of your e-commerce business, track key performance indicators (KPIs) such as website traffic, conversion rates, average order value, and customer lifetime value. You can use analytics tools and customer feedback to identify areas for improvement and make changes to your store design, product offerings, or marketing strategies as needed. Continuously improving your website's user experience, implementing effective SEO strategies, and engaging with your customers can help increase sales and improve your e-commerce business's success.