Continuous delivery (CD) reduces the cost, time, and risk of deploying updates by allowing fast incremental changes, but monitoring these deployments is crucial to ensure user satisfaction. Rollbar is an effective tool for error monitoring, alerting developers to new errors post-deployment, and identifying the specific deployment and code changes responsible. This capability accelerates troubleshooting and problem resolution. The integration of Jenkins, an open-source server for automating continuous integration and delivery, with Rollbar is demonstrated using a Java-based pet clinic project. Jenkins is configured to notify Rollbar of each new deployment, allowing Rollbar to track and identify errors efficiently. The setup includes creating a Jenkins job, integrating Rollbar's notifier SDK, and ensuring source control integration to link errors directly to the relevant source code. By simulating errors and using Rollbar's dashboard, developers can quickly trace errors back to their source, helping maintain application reliability and improve customer experience.