An Availability Set is a logical grouping in Microsoft Azure that isolates VM resources from each other to limit the impact of failure.
Microsoft documentation says that with Availability Sets, “If a hardware or software failure happens, only a subset of your VMs are impacted.”(Tutorial: Create and deploy highly available virtual machines with Azure PowerShell )
Turbonomic discovers Azure Availability Sets. For each set, it creates a policy that identifies compute tiers to exclude from that set.
» IBM Turbonomic Glossary