Azure offers various VM sizes for which you can constrain the VM vCPU count to reduce the cost of software licensing while maintaining the same memory, storage, and I/O bandwidth.
The Esv4, Edsv4, and Easv4 memory-optimized Azure VM series now offer new constrained vCPU VM sizes.
You can now take advantage of the latest generation Azure Virtual Machines for workloads that need high memory, storage, and I/O bandwidth, but not a high vCPU count. Several database workloads are not CPU-intensive and can benefit from these offerings.
By deploying the latest Azure Virtual Machines, you can further increase the efficiency of your cloud infrastructure.
See the complete offering of VMs here Constrained vCPU capable VM sizes