Cloud computing offers undisputed benefits in terms of agility and cost-effectiveness. But cloud computing platforms are not commodities, with one easily substituted for another. Chances are that some of your workloads can only run on-premises and some can only run in specific proprietary clouds. Once you move a workload to a proprietary cloud, it typically requires rewriting and/or reconfigurations to move back onsite.
VMware cloud computing services let you run both new and legacy applications in the cloud. You get the best of both worlds: leverage your existing investments while still gaining the agility and cost-effectiveness of a public cloud.