 <p>Looks like no impacts from the AD perspectives. From a DNS perspective, Azure assigned IP addresses to the machines in the order that they were restarted, so to avoid confusing DNS, I restarted the VMs in order of increasing IP address.</p> <p>Needed to make sure SQL Server data volumes were attached before starting the machine, otherwise the database would show as being in a pending recovery state.</p> <p>Also, apps that depend on MAC address (such as some license servers) did require new license files, as the MAC address changed.</p>