The document discusses integrating the btrCloud solution into the CloudStack infrastructure. It describes btrCloud as a software developed by ASCOLA to manage and optimize virtualized data centers. BtrCloud includes low-level stacks like BtrMonitor that collects metrics and BtrAction that manages lifecycles, and medium-level stacks like BtrScript for infrastructure management and BtrReport for consumption reporting. Integrating btrCloud would allow CloudStack to meet QoS requirements like setting affinity rules and optimizing migrations.