The Bsv2, Basv2, and Bpsv2 series virtual machines are the latest generation of Azure burstable general purpose VMs, providing a baseline level of CPU utilization and capable of expanding to higher CPU utilization as workload volume increases. This is ideal for many applications such as development and test servers, low traffic web servers, small databases, micro services, servers for proof-of-concepts, build servers, and code repositories.
These new B series v2 virtual machines, compared to B series v1, offer up to >15% better price-performance, up to 5X higher network bandwidth with accelerated networking and 10X higher remote storage throughput.
Please refer to the blog, and the documentation for Bsv2, Basv2, and Bpsv2 for more details.