E-Commerce websites are online platforms that allow businesses and consumers to buy and sell products or services over the internet. These websites provide a virtual storefront where users can browse items, read descriptions, and make purchases using various payment methods. Popular examples include Amazon, eBay, and Etsy. These websites often feature user-friendly interfaces, search functions, and customer reviews to enhance the shopping experience. They may also offer additional services like order tracking, customer support, and personalized recommendations, making it easier for users to find what they need and complete transactions securely.