CloudFoundry is typically deployed using the BOSH tool chain automation that drives IaaS through their APIs thanks to CPI (Cloud Provider Interface) connectors. This enables large scale deployments of CloudFoundry to be spanning tens or hundreds of VMs across multiple availability zone, with a restricted team of operators.
As one Orange entity is internally deploying CloudFoundry on CloudStack, a new BOSH connector for CloudStack was developed and donated to the community by Orange, see the project page on GitHub
More details into the related Berlin 2015 CloudFoundry summit talk.