For the subset of applications being monitored by application performance monitoring (APM) tools, Zenoss integrates with those tools to combine application and infrastructure data in one interface — delivering a single source of truth for problem identification and resolution. For all services and applications, whether they are monitored by an APM tool or not, Zenoss provides the same real-time IT service modeling across all cloud and on-premises environments through the use of ZenPacks to automatically query and index infrastructure metrics.