A high-quality, user-friendly website is the first thing that is required to set up an e-commerce business. The website which is also referred to as the online store is the face of the business as buyers interact with the seller through it. It presents all the products and services the seller has to offer and the buyer can buy these by completing the checkout process.

Source: http://www.selfgrowth.com/articles/essential-elements-of-a-magento-e-commerce-website