In order to offer service to customers with geographically diver se locations, CSPs often lease resources in networks where they do not have a presence (“off ne t”). This allows them to provide end-to-end service to their customers, but requires a manual and complex negotiation between CSPs that includes both the business arrangement and the actual service design and activation. CSPs may also be structured such that they operate multiple networks independently and require similar transactions among their own networks and business units in order to provide an end-to-end service. The MDONS use case blueprint developed by the LF Networking’s ONAP community solves many of these problems by automating the above-mentioned service activation and operations, that include service assurance and monitoring. Both MODNS and the Cross Domain and Cross Layer VPN (CCVPN) blueprints jointly address the optical network-as-a-service problem.