| Word | Description |
| e-Procurement | An online system that enables organisations and buyers acquire products and services. |
| EFTPOS | An acronym for 'Electronic Funds Transfer at Point Of Sale'. EFTPOS can accept either credit or debit cards and, depending on the type of card used, funds may be instantly debited from an account. |
| Electronic commerce | The use of any form of electronic communication technology, such as the Internet, bar coding, etc. to communicate and conduct functions and transactions enabling commercial activities with your business. |
| Electronic data interchange (EDI) | The automated exchange of standardised documents in electronic form between computer systems of separate entities. |
| Electronic form (e-form) | A screen-based form, which is typically provided via the World Wide Web. |
| Electronic funds transfer | See EFTPOS. |
| Electronic mail (email) | The electronic transfer of unstructured messages between organisations or individuals. |
| Email address | A string of characters that identifies the source or destination of an email message. An email address is composed of the mailbox (i.e. the recipient), followed by the symbol @ then the address of the host computer, e.g. info@tecc.com.au |
| eMarkets | A central hub based on the Internet that helps to improve the procurement process by putting suppliers in touch with buyers. |
| Encryption | The process of scrambling digital messages so that only the sender and receiver can read the message. |
| EPON | Ethernet PON. See PON. |
| Ethernet | A common standard for networking computers, usually in a local area network (LAN). |
| Expert system | A software system with two basic components: a knowledgebase and an inference engine, which is used to mimic an expert's reasoning process. |