[Bellyache5]

What's the use-case for creating resources outside of--but also defining them in--CDK in this case? That's generally an anti-pattern.

[andrew_]

It's actually not an anti-pattern. CDK provides many methods (e.g. `StringParameter.valueForStringParameter`) for accessing deployed resources from other stacks, or those deployed by other tools or manually. IaC can get in the way or that, but it's not forbidden, nor discouraged.