Can I grant lambda access to other accounts using Organization Unit IDs?

Question

I want to create a lambda that will exist in one central account and that will get invoked by other accounts within my Organization. I know it is possible to grant access for another individual account to invoke a lambda using a resource policy, but can I grant access to all accounts in my Organization using Organization Unit IDs somehow? If so, how?

Ideally I want to make it so as new accounts get added in my Organization they will automatically have access to invoke the lambda without requiring me to update the policy and grant them access via the individual account ID.

Answer 1

In the Principal part of the resource policy, you can only provide AWS accounts, users, roles etc but no organizational units. However, there is a condition called aws:PrincipalOrgPaths which I think can help you achieve what you want.