What is a Network Source of Truth?
A Network Source of Truth is a repository of data that provides network engineers and network automation pipelines an authoritative view of the network. Providing the definitive view of what network devices are active on the network. A Network source of truth can either be maintained manually, but in most cases is maintained by a dynamic process of scanning the network and updating the inventory.
Network Source of Truth Software
Common services in use today are Netbox, Nautobot, Solarwinds Orion, ServiceNow and in some cases a spreadsheet!