Which custom deployment event is sent to the API by Dynatrace?

The correct answer is CUSTOM_DEPLOYMENT. This event specifically is used within Dynatrace's API to track the deployment of new software versions in monitored environments. When an application is deployed, sending this event provides visibility into the changes made to the application, helping teams to correlate performance metrics with specific deployments.

The significance of the CUSTOM_DEPLOYMENT event lies in its ability to help teams recognize the impact of their deployments on application performance and stability. This information can be crucial for troubleshooting issues that may arise after a new version is released, as it establishes a direct link between code changes and performance fluctuations.

By utilizing the CUSTOM_DEPLOYMENT event, organizations can enhance their deployment practices, ensure better monitoring of applications post-deployment, and ultimately improve the reliability of their software delivery processes.