Today, we’re excited to continue addressing the needs of developers by announcing the release of the Photon Platform BOSH CPI. We’re building upon the recent release of v0.8 of Photon Controller: a distributed, multi-tenant and elastic platform purposefully-built for modern applications.
BOSH was designed to address the challenges in building both small and large distributed system. A BOSH CPI, or Cloud Provider Interface, is an API that is used to interact with an underlying IaaS to create and manage objects on an infrastructure, including images, VMs and disks.

Most real-world applications we ship to consumers or enterprises are multi-year projects. In the cloud era, newer technologies (programming languages, runtimes, frameworks) are created faster than ever. While most of them fail to get any traction, once in a while a technology becomes popular because it solves a problem or set of problems extremely well.
Now in such an era, if you make a large investment for a multi-year project on a PaaS that only supports one technology and some other technology comes along that happens to solve your problem better, then you are stuck. You have unintentionally become a victim of vendor lock-in. The heart of your problem is that your PaaS, and hence your app, was not future-proofed to begin with.

by Ezra Zygmuntowicz (aka @ezmobius)
You are probably wondering about how Cloud Foundry actually works, hopefully these details will clear things up for you about how Cloud Foundry the OSS project works, why it works, and how you can use it. Cloud Foundry is on github here: https://github.com/cloudfoundry/vcap. The VCAP repo is the meaty part or what we call the “kernel” of Cloud Foundry as it is the distributed system that contains all the functionality of the PaaS. We have released a VCAP setup script that will help you get an Ubuntu 10.04 system running a instance of Cloud Foundry including all the components of VCAP as well as a few services (mysql, redis, mongodb) up and running so you can play along at home.