DotCloud is a service for deploying, managing, and scaling web applications. Sandbox apps are free, and users may add as many services as they want. Live applications run on a separate cluster, which is monitored 24/7 by the dotCloud operations team. Developers may build custom application stacks by combining powerful, pre-configured cloud services. A SOAP-based API makes dotCloud accessible programmatically so that it can be integrated into other applications and services.