If I were to choose one technology breakthrough that completely revolutionized the way data centers are designed and managed, I’d choose server virtualization platforms like VMware, Hyper-V, Xen, and KVM. There are a number of reasons why server virtualization has been so beneficial, including hardware cost savings, decreased data center footprint, and eliminating vendor lock-in.
Beyond these benefits, most of us moved to server virtualization because of the flexibility one has when spinning up customized servers that meet specific application requirements. But for the most part, server virtualization technologies have plateaued. There simply aren’t very many new and groundbreaking features being released.