extranet - Computer Definition
An intranet opened to select groups of users outside of a company.Access generally is provided to groups of vendors, suppliers, customers, and others who have a requirement to access select databases and processes. Extranets, for example, can enable customers to place orders electronically and to track them to fulfillment, and vendors can track retail sales of their products, perhaps store-by-store. See also intranet.
A secured Web site on the Internet for customers or business partners and not the general public. To gain access, users must establish an account with identification and an authentication method such as a password, security token or biometric. An extranet can provide access to research, current inventories, internal databases, electronic teaching platforms, virtually any information that customers or associates have permission to view. Many extranets use virtual private networks (VPNs) to encrypt data in transit. Contrast with intranet. See Microsoft SharePoint, EDI and virtual data room.