The document discusses IBM's cloud platform Bluemix. It provides an overview of Bluemix, describing it as an open platform for developing and hosting applications that simplifies tasks associated with managing infrastructure at internet scale. Bluemix is built on IBM's Cloud Operating Environment architecture using Cloud Foundry as an open source PaaS. It enables developers to rapidly build, deploy, and manage cloud applications while tapping into available services and runtimes provided by IBM and other ecosystem partners. The document outlines some key Bluemix concepts and components such as applications, services, organizations/spaces, and buildpacks.