Amazon CloudWatch vs Nagios for Cloud Infrastructure Monitoring | UpGuard

This report compares Amazon CloudWatch and Nagios (Core/XI) across capabilities, usability, community support, release cadence, pricing, APIs/extensibility, integrations, adoption, learning curve, and a quoted security rating. It finds CloudWatch easier for AWS-native monitoring with autoscaling and SNS alarms, while Nagios excels in multi-cloud coverage, plugins, and enterprise features but has a steeper learning curve and higher cost for XI. Scores are close (CloudWatch 3.7/5 vs. Nagios 3.9/5), and the report recommends tandem use—starting with CloudWatch and integrating its metrics into Nagios XI for a consolidated view.