I have developed this book to investigate Mesos-based cluster development and integration. I found that data center operating system (DCOS; and it‚Äôs command-line interface [CLI]) was a natural progression from basic Mesos; so you will find that the later chapters of this book concentrate on that. Within the limits of the funding and time available to me, I have investigated each element of a Mesos-based big data stack, starting with a local cloud on Apache CloudStack followed by Apache Brooklyn for release management. Chapters are topic specific covering Mesos-based resource management, storage, processing, and queueing. I examine application frameworks like Akka and Netty; and finally, I cover visualisation.