The text emphasizes the inadequacy of traditional metrics like availability and resource utilization in measuring the success of IT deployments, advocating instead for business impact metrics. It highlights the common practice of relying on subjective assessments for verifying deployment outcomes and underscores the need for a clearer definition of success that aligns with business goals. The text introduces Harness as a solution that integrates deployment processes with real-time monitoring tools to assess business impacts and enable automatic rollbacks if negative effects are detected. It suggests that organizations should leverage Application Performance Monitoring (APM) tools to extract business metrics and argues for a shift towards measuring the real business outcomes of deployments, such as revenue impact, to better understand the success of new services and applications.