Many documentation teams struggle to measure the success of their efforts effectively, often relying on metrics like page views that don't directly reflect business value or developer engagement. To address this, organizations can focus on three key metrics aligned with developer experience: acquisition, adoption, and deflection. Acquisition involves attracting new developers by making documentation discoverable and accessible, adoption measures how well developers integrate APIs into their workflows, and deflection reduces support burdens by empowering developers with self-service tools. These metrics form a self-reinforcing value expansion loop, where improvements in one area can enhance the others, ultimately leading to sustainable growth and developer success. By choosing a primary metric based on organizational priorities and iterating on focused experiments, teams can create a shared dashboard to track these interconnected metrics, aligning their documentation strategy with business outcomes and developer needs.