Monitoring your services is production is a must for most serious businesses. People who develop on AWS, typically use AWS Cloudwatch for setting up monitoring. Typical metrics to monitor are latency, faults, invocations, throttles etc.
CDK Aspects are a powerful tool provided by the AWS Cloud Development Kit (CDK). They are utilizing the Visitor Pattern. By applying a CDK Aspect to a specific scope, you get access to every child node within it. You can inspect them or alter them.
Developers are accustomed to using their own tooling and writing in familiar languages.