A startup is a business looking to find and establish a scalable and repeatable business model. E-Commerce is the online version of commerce - buying and selling goods using online platforms or websites.
In simplest terms, it's the selling of products online. Via your own website or an online marketplace like eBay, you can promote and sell products online, taking orders and accepting payment--all without stepping foot in a storefront or ever seeing your customers face-to-face.
The most amazing aspect of e-commerce is its ability to impact sales and marketing efforts immediately. By going online, suddenly a neighborhood bakery or a home based consulting service expands its reach to a national or even international base of potential customers. Web-based sales know no international boundaries. Forester Research, which analyzes online trends and statistics, projects the online retail market for U.S. businesses to be $230 billion by 2008. That's a full 10 percent of anticipated total U.S. retail sales."