Will adding additional suitecloud plus licenses improve the performance of a tool like Dell Boomi? We are using dell boomi to import 20k record but it takes like 8 hours, which is super slow and not scalable.

I suppose that depends entirely on how the tool in question is architected. More licenses allow for more concurrency in Integrations, Processors (think Scheduled and Map/Reduce scripts), and CSV Import queues. If the tool isn't designed to take advantage of concurrency in any of those areas, then it's unlikely more licenses would make any difference.

Thanks Eric!

Adding suitecloud plus licenses will only get you so far in Boomi. You must also use some kind of message queueing and process listeners for multi threaded processing. The flow control shape can also fork threads, but I think they're also pretty limited.