This would be for a business with less than 40 licenses. I've been looking into organizations to assist us not only with the migration, but also in providing the Microsoft licensing as an AOS-G or as an organization with a relationship with an AOS-G.

1. Currently I'm looking at LiftOff, Agile IT, and Cleared Systems. I'm looking for reviews of these companies, specifically how the migration process went and how happy people are with licensing support.
2. Additionally, it'd be great to find resources that link Microsoft Security licensing to how that licensing can help an organization meet specific NIST 800-171 controls and objectives (i.e., this licensing gives you the ability to configure this thing, which can be used to help you earn this control).

If this isn't the place for this post, please direct me where I should go. Thanks.