A free, working-engineer pass through the FinOps Open Cost & Usage Specification (FOCUS™). Eight lessons covering what FOCUS is, how to read the spec, the cross-cutting attributes, every column group, and the analyst best practices for filtering, validating, and aggregating a real FOCUS dataset. Ends in a 50-question practice test.
Build a common cost-and-usage language between Finance and Engineering using FOCUS terminology.
Read the FOCUS specification — tell normative from non-normative text and apply BCP 14 keywords correctly.
Apply the cross-cutting attribute rules (naming, nulls, dates, currency, units, tags, metadata) to validate any FOCUS dataset.
Pick the right cost column — Billed, Effective, List, or Contracted — for the question being asked.
Use the FOCUS Use Case Library and Sandbox to run real queries with safe filtering and validation patterns.
Avoid the eight most common analyst pitfalls — LIKE filters, double-counting commitments, aggregating across currencies, and more.
This course is written from the public FOCUS specification and its open Supporting Content on GitHub. When the course says something definitive, the spec is always the canonical reference — bookmark these and read them alongside each lesson.
FOCUS Specification — current and past versions. The canonical reference for every conformance question.
Supporting Content (GitHub) — per-column markdown with the reasoning, worked examples, and edge-case clarifications behind every rule.
FOCUS_Spec repository — full source for the spec, all branches, every open and closed issue.
Column Library — descriptions, IDs, display names, and the spec version each column was introduced in.
Use Cases & Queries — example SQL by FinOps Capability and spec version.
FOCUS Sandbox — run queries against anonymised real billing data.
50 multiple-choice questions covering every lesson. 75% threshold, instant scoring, rationale on every answer. Enter your email when you start and we’ll mail you a copy of the results.
Open the Practice Test →Independent study aid — not affiliated with, endorsed by, or sponsored by the FinOps Foundation. Hybrid FinOps is an independent publication. This course is not an authorised FinOps Foundation training partner and does not grant any official certification.
FOCUS™ (the FinOps Open Cost & Usage Specification) is an open specification maintained by the FinOps Foundation and the Linux Foundation. Material on these pages draws on the public specification text and the FOCUS GitHub supporting content, with original commentary added. Quotations from the spec are used under fair-use principles for educational purposes; the canonical source is always the official spec.
“FinOps™”, “FinOps Foundation™”, “FinOps Certified Practitioner®”, and “FinOps Certified FOCUS Analyst®” are trademarks of the FinOps Foundation, used here solely for nominative reference. To pursue the official credential, take the FinOps Foundation’s own course and exam at learn.finops.org.
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