Put simply, ecommerce means the ability to sell goods or services online. When it comes to ecommerce in web design, this refers to the options available when setting up an online store. It is possible to add ecommerce functions to an existing website, or you can ask an ecommerce web design company to build you an ecommerce site from scratch. Options for ecommerce in web design range from simple catalogues with a ‘Buy' button under each product, to more complex inventory management plug-ins that connect with your accounting software, order fulfilment services and physical stock levels. Two of the major companies in the ecommerce platform space are Shopify and BigCommerce.