As I am new to marketing cloud so I have a doubt what is the pros and cons for having 1)multiple instance or 2)single instance and multiple business unit.

We currently have providers, members and prospects. So to proceed further which is suitable for the requirement of setup whether we consider each of them as multiple instance or we can have single instance and according three business units.

As per my best knowledge below are the few points which I was able to gather: Multiple instance Pros the data can be managed separately Cons cost will be higher sharing of data across instances will be difficult

Single instance with 3 child bus Pros sharing of data will be easy cost will be less comparatively to multiple instances

Please can you provide more inputs on this requirement.

Thanks, Joey