Alarming on SLOs in Amazon Search with CloudWatch Application Signals – Part 1

This article discusses Service Level Objectives (SLOs) and burn rate monitoring for Amazon Product Search, focusing on improving monitoring and observability techniques. The key points include:

• Traditional threshold-based monitoring has limitations in detecting service issues
• SLOs provide a more comprehensive approach to monitoring service reliability
• Burn rate monitoring helps detect significant events while reducing false alarms
• Key SLO concepts include Service Level Indicators (SLIs), Error Budget, and multi-window burn rate approaches
• Two types of SLO calculations exist: period-based and request-based

The article highlights the benefits of SLO monitoring in providing more nuanced and business-aligned observability, helping teams quickly identify and respond to critical service issues while avoiding unnecessary notifications.