The vCloud Air platform supports pay-as-you-go billing and provides an expandable architecture for VMware to introduce new vCloud Air services.

The vCA platform APIs are designed to work with the service-oriented architecture of vCloud Air and are used by services such as Virtual Private Cloud OnDemand and vCloud Air Object Storage. The extensibility of the service-oriented architecture supports the discovery and consumption of services through the vCA platform APIs, allowing for a common framework, and loosely-coupled services.

Understanding the service-oriented architecture is essential to creating API clients to automate operations. For a description of the components of the service-oriented architecture of the vCloud Air platform, see Service-Oriented Architecture Explained.