Managed Apple ID can be used alongside the personal Apple ID that the user has already signed in with, and the two don’t interact with each other. This crea...
https://www.apple.com/mx/business/docs/site/iOS_and_iPadOS_Deployment_Overview.pdf
authorized by their contract with Apple. For example: Authorized Reseller Authorized Value Added Reseller Authorized Service Provider Authorized Wholesaler ...
https://www.apple.com/mx/legal/intellectual-property/guidelinesfor3rdparties.html