Add related to topic "monitoring"

topics/monitoring/index.md

@@ -4,5 +4,6 @@ display_name: Monitoring
 short_description: Monitor the impact of your code changes. Measure performance, track errors, and analyze your application.
 topic: monitoring
 wikipedia_url: https://en.wikipedia.org/wiki/Application_performance_management
+related: apm, observability, application-monitoring, alerting, event-monitoring, checkmk
 ---
 In the fields of information technology and systems management, application performance management (APM) is the monitoring and management of performance and availability of software applications. APM strives to detect and diagnose complex application performance problems to maintain an expected level of service.