One of the most interesting talks in my opinion, Olivier has presented the tools that he thought might be the future of monitoring, the first consideration is that the cloud is increasing exponentially the number of hosts and services to monitor which thus requires a scalable monitoring solution, he sees two possible solutions for this problem:
Icinga installed with Mod_gearman an event broker (this also works with Nagios) that allow to scale horizontally the number of servers running the check, while maintaining a single central server management.
Or an alternative software created to make this task: Shinken, this software is born a few years ago with the idea to make a monitoring solution compatible with the cloud, with distinct elements that can be replicated and multiply, and so is possible to raise the number of checks really easily and without any loss in performance.