Zerto has many customers already protecting virtual machines from vSphere and Hyper-V to AWS and Azure.
With the recent release, Zerto added several new features and fixes that make it worthwhile to upgrade the AWS or Azure Zerto Cloud Appliance (ZCA). See the release notes here.
The upgrade is really straightforward. Log into your ZCA, download the upgrade from MyZerto and then do the install. To demonstrate how easy it is, I created this video.