Virtualization and cloud computing are the future of our IT infrastructure. It's important for system administrators who want to succeed to have a strong foundation in virtualization technologies, particularly in the popular virtual environment VMware vSphere, including the ESXi hypervisor and vCenter Server. With vSphere, you can create virtual machines that bypass the need for additional expensive hardware and provide features not available on a physical system—a perfect setup for exploring new technologies and setting up test environments.