N2WS, which Veeam has just bought, is a focused AWS cloud backup vendor. While they have gone to market through the AWS Exchange so far, they consider the product very channel-friendly for both resellers and MSPs.
Liquidware sells entirely through channel partners, and uses a relatively small value channel because of their enterprise focus. Their solution works in any desktop environment, however, so they are on the lookout for potential new partners at Microsoft events.
The provision of new object storage, compute and marketplace services to developers is part of a continuing Nutanix strategy to elevate itself from providing HCI infrastructure to providing the whole stack.