Andrew Quigley enhanced the FinOps-Open-Cost-and-Usage-Spec/FOCUS_Spec repository by refining the documentation for Usage Quantity, clarifying its definition and providing example scenarios to improve understanding of allocated records. He addressed a copy and paste issue and clarified split-cost examples, ensuring the documentation aligns with FinOps standards and repository guidelines. Using Markdown and leveraging skills in data modeling and technical writing, Andrew’s work focused on making cost attribution more accurate and actionable. These improvements aimed to streamline onboarding and reduce support queries, demonstrating a thoughtful approach to documentation depth and maintainability within the project’s technical context.