I have a cloudformation script that launches an EC2 instance and and adds it to AD, Target group, ALB, Route 53, etc.
Some ec2s need to be added to a a route 53 domain in another account.
Has anyone use cloudformation for cross account DNS record before? This is a small number number of resources but it is a critical business case.
Generally anything you can do in the console you can do with the API. But how to invoke that with CloudFormation wold need some thinking about.
I think this is one that you will need to research in the the Doco or AWS support Forum.