Is there a litmus test for when multiple business units become the best practice for a Marketing Cloud implementation? In the official documentation, I've seen the primary benefits discussing user roles and access to content.
But suppose there is a single execution team in a company with multiple regions (with distinct regulatory concerns), multiple brands (with distinct branding and regulatory concerns), and multiple subscription lists that occasionally overlap.
Would this be a case for multiple business units to manage each region and/or brand?
Or would these be managed better with dynamic content in the sends themselves?