# Insights that CloudWatch investigations can surface in investigations
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CloudWatch investigations can surface the following types of items and add them to the **Suggestions** tab of an investigation. For hypotheses involving multiple resources, visual diagrams may also be provided to illustrate causal relationships.
+ Hypotheses about root causes
+ CloudWatch alarms, including both metric alarms and composite alarms
+ CloudWatch metrics
+ AWS Health events
+ Change events logged in CloudTrail
+ X-Ray trace data
+ CloudWatch Logs Insights queries for log groups in the Standard log class
+ CloudWatch Contributor Insights data
+ CloudWatch Application Signals data
+ CloudWatch Database Insights data