Extranet

In contrast, the extranet can be thought of as an intranet with a controlled access. Like the intranet, the extranet is a networking platform too; however, besides employees, the extranet enables controlled access to an organization's intranet for authorized partners, suppliers, customers, or others business-related individuals and organizations outside the company. Specifically, the extranet represents a controlled access method of the organization's intranet using internet infrastructure.