AWS Certified Developer Associate DVA-C02 Practice Question

To implement the custom metric 'UserSignUpSuccessCount' effectively, the serverless function should output a JSON structure according to the monitoring service's embedded metric format, which is automatically parsed and converted into a custom metric by the service. Using the direct API call for putting metric data is less efficient and typically not necessary when leveraging the embedded metric format. Altering the function's execution role permissions is a separate concern and doesn't directly result in the creation of custom metrics. Lastly, integrating a distributed tracing system is useful for obtaining detailed insights into requests flowing through the system but isn't specifically designed for sending custom metrics.