multisite on AWS

It appears that only the hosting Beta is open.

Since I am launching a multisite project that customers will be dependent on, I would like to review with a sales/technical person my needs requirements.

Lastly, is it true to say that the existing WPMUDEV plugins including domain mapping will work with a sub directory multisite?

If I am to use the WPMUDEV plugins on AWS, may I use sub directory there with WPMUDEV Domain Mapping plugin out of the box?

Or would I need to license special plugins or system design from the Enterprise level of WPMUDEV hosting?