The FinOps Open Cost and Usage Specification (FOCUS) is an open specification that defines clear requirements for technology billing data generators to produce consistent cost and usage datasets. At the end of 2025, version 1.3 of the specification was released, along with a fresh new website that makes it easier than ever to learn, test, and implement the specification. If your variable cost service vendor ( cloud, SaaS, and/or AI) has not yet implemented FOCUS, or is on an