There are four types of e-commerce: direct, indirect, mixed, and omni-channel. Direct e-commerce involves customers making purchases directly from the retailer. Indirect e-commerce allows customers to purchase products from a retailer, but also access products from other retailers through the retailer's website. Mixed e-commerce involves a combination of direct and indirect sales. Omni-channel e-commerce allows customers to make purchases through multiple channels, including the retailer's website, app, and in-store kiosks. You can build your E- Commerce website in just few steps.