B-series VMs

The B-series was built as a cost effective way to deploy workloads that do not need the full performance of the CPU continuously and burst in their performance. A B-series VM is running in the low-point and not fully utilizing the baseline performance of the CPU. While not using the full performance of the CPU, the VM instance builds up credits. When the VM has accumulated enough credits, the credits can be used and the VM can burst its usage, up to 100% of the vCPU, for the period of time when the application requires higher CPU performance. A B-series VM is based on  Intel® Broadwell E5-2673 v4 2.3 GHz or an Intel® Haswell 2.4 GHz E5-2673 v3 processor vCPU.