e-tail The term used for shopping on the Internet - an e-tailer is a shop which only trades on the Web.
Clicks and mortar A gimmicky term for e-business; clicks deriving from the clicks of a mouse - symbolising the shopfront - and mortar representing its warehouse and distribution system.
e-learning The practice of learning or taking part in training conducted over the Internet. These can range from partially Internet-based training courses to 100 per cent tuition on the Web.
Intranet The internal electronic communications system within a company, designed to increase the efficiency with which information is delivered.
Extranet An external communications system, typically set-up with business partners, and using portions of their Intranet.