Leverage DataSync for ServiceNow to keep your ServiceNow production and sub-production instances in sync, so that you can develop and test your ITSM data without resorting to "all or nothing" cloning.
Popular DataSync for ServiceNow topics:
DataSync for ServiceNow Agent
Install and configure Replicator Agent to manually share data from your ServiceNow instance to on-premises databases.
ServiceNow dynamic shares
Sync records from your source ServiceNow instance with your databases as records are created, updated, and/or deleted.
ServiceNow bulk shares
Sync records from your source ServiceNow instance with your databases as a pre-filtered range of data all at once.
ServiceNow messages & receipts
Check what data you're sharing out with outbound and inbound messages, and rest assured that your data has been properly synced to your databases by checking receipts in your ServiceNow instance.