Generation 2 VMs support key features that aren't supported in generation 1 VMs. These features include increased memory, Intel Software Guard Extensions (Intel SGX), and virtualized persistent memory (vPMEM). You can now run Windows workloads on Generation 2 VMs in production to take advantage of these Generation 2 features.
Learn more: https://learn.microsoft.com/en-us/azure/aks/cluster-configuration