Hello @cbomgardner ,
For ServiceNow 3rd-party vendor configurations, always prefer OOB functionality, provide only the required access, follow the WADS/change approval process, avoid direct production changes, properly document customizations, and test everything in Dev =>Test/UAT => Production. Also review vendor changes for security, performance, maintainability, and upgrade compatibility.
You can refer this :
https://www.servicenow.com/community/itsm-forum/adding-third-party-contacts-suppliers/m-p/612027
https://www.servicenow.com/community/cmdb-forum/how-to-capture-3rd-party-hosted-applications/m-p/256...
https://www.youtube.com/watch?v=rmBnblJsYKs&t=35s
If this helps you then mark it as helpful and accept as solution.
Regards,
Aditya
