Monitoring as Code is a concept that involves defining relevant metrics for applications and infrastructure, and its implementation, known as "Performance Signature," was developed by Thomas Steinmaurer, Matthias Fichtner, and Raphael Pionke. The Performance Signature, stored in a JSON or YAML file, acts as an automated quality gate during the Continuous Delivery Pipeline, ensuring validation at various stages and production deployments. Matthias and Raphael have released a Jenkins Plugin for integrating Performance Signature with Dynatrace, which allows developers to validate metrics like response time and throughput across different stages of the pipeline. This integration provides benefits such as decoupling data capturing from analysis, versioning of performance signatures, and real-time feedback on production environments. The approach has been adopted by organizations moving towards cloud-native delivery pipelines. The implementation guide for the Jenkins plugin details steps like installing Dynatrace OneAgents, configuring the Jenkins Plugin, and wrapping deployment and testing processes to automatically capture and evaluate performance data. The setup allows for monitoring feedback as a service and facilitates root cause analysis by comparing builds, thus enhancing the reliability and performance of applications.