A **Network Service Instance** is an entity within the [[Service Delivery (CSDM domain)|Service Delivery domain]] of the [[Common Service Data Model|Common Service Data Model]] (CSDM), a reference architecture developed by [[ServiceNow|ServiceNow]] that provides prescriptive guidance on service-related definitions and data modeling within the ServiceNow AI Platform. A Network Service Instance represents a specific deployed, provisioned, or configured instance of network services that are based on Network Functions, providing the service layer abstraction for network capabilities delivered to consumers. Network Service Instances are recorded in the cmdb_ci_network_service_instance table with a Service Classification of "Technical Service" and are a [[Service Instance (CSDM)|Service Instance]] type introduced in CSDM 5 as a sibling to [[Application Service (CSDM)|Application Service]]. Together with [[Connection Service Instance (CSDM)|Connection Service Instances]], which represent logical or physical network connections, Network Service Instances form the core of the [[Service Delivery Network|Service Delivery Network]] and are part of the service dependency map. Network Service Instances use the "Provided by::Provides" relationship with Connection Service Instances, enabling organizations to model how network services are delivered across the infrastructure. As with other new Service Instance types in CSDM 5, Network Service Instances are provided as a data model only requiring manual creation and maintenance, with no dedicated user interface and no inclusion in Event Impact Analysis.