To integrate observability into your CI/CD pipelines and ensure confident deployment of applications, you can use New Relic change tracking with two different approaches: GraphQL and the New Relic CLI. Change tracking allows you to visualize deployments, validate changes, deliver them faster, and capture different events across your pipeline. With change tracking markers, you can record events, logs, anomalies, and incidents across deployed applications and services, and correlate errors, logs, and other metrics for valuable insights. The process of creating a user key, setting up environment variables, and integrating with CI/CD tools such as GitHub Actions, Ansible, and Jenkins is also explained in detail, making it easier to deploy markers and track changes in your pipeline.