E-commerce (electronic commerce) is the electronic selling of products and services. It includes internet selling and all forms of online purchasing and direct business links, using technologies such as electronic data interchange (EDI). Email (electronic mail) is the electronic exchange of any information that can be digitally encoded, often messages.

A website is an online presence in the broadest of senses. It can be a corporate brochure complete with annual accounts, a PR department displaying press releases, or a technical documentation library with in-depth product specifications and updates. A website is able to undertake almost any function where information can be delivered online. This also includes two-way traffic, eg address details, reader comments and voting.

This topic describes the background to creating and hosting a website including selecting an Internet Service Provider (ISP) and business integration.

It also looks at the underlying technology and commerce issues, such as payment mechanisms and establishing an electronic shopping system.

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