This document welcomes attendees to the 5th Nagios World Conference and provides an overview of Nagios solutions. It summarizes that Nagios is deployed globally across all industry sectors in small, large, and multi-national businesses for network monitoring, alerting, reporting, and reaction. It then highlights some of the open source Nagios plugins, extensions, and tools as well as commercial products for enhanced user interfaces, reporting, configuration, network flow monitoring, log analysis, issue tracking, and centralized management.