Shopify is a popular eCommerce platform because it is user-friendly, customizable, and offers a wide range of features and integrations to help you create and manage your online store. It also offers a variety of payment gateways and security measures to ensure the safety and security of your transactions. Additionally, Shopify provides a range of marketing and SEO tools to help increase visibility and drive sales for your store. Overall, using Shopify to build your eCommerce store can save time, money and effort.