Milestone provides an observability and analytics platform designed to measure the impact and Return on Investment (ROI) of Generative AI tools in software development. The solution integrates directly with existing engineering workflows and project management systems to track key performance indicators, including coding velocity, quality, and resource allocation. By analyzing data from the codebase, it distinguishes the specific contributions of AI assistants versus human developers, offering granular visibility into R&D efficiency. This allows engineering leaders to identify bottlenecks, validate the effectiveness of specific tools, and optimize budgets based on empirical evidence rather than assumptions. Ultimately, Milestone enables organizations to transition from experimental AI adoption to data-driven strategies that ensure technology investments yield tangible operational improvements.