Direct Link Exchange on Classic allows customers to use an Exchange provider to deliver connectivity to their IBM Cloud. An Exchange provider is a colocation or data center provider that is already connected to the IBM Cloud network, by using multi-tenant, high capacity links (also known as a network-to-network interface, or NNI). Customers typically can purchase a virtual circuit at this provider, bringing connectivity at a reduced cost, because the physical connectivity from IBM Cloud to the Exchange provider is in place already, shared among other customers.