extranet

/ˈɛkstrəˌnɛt/
noun
  1. A private computer network that allows controlled access from outside the organization, typically to share information with partners, suppliers, or customers.
    • Our extranet provides secure access to training materials for all franchise owners.
    • The company uses an extranet to share project updates with its overseas partners.
    • Suppliers can log into the extranet to check inventory levels and place orders.