Whose Revenue Number Is Right? Metric Definitions and the Semantic Layer
The disagreement is never about SQL. It is about which denominator, which period, and which rows were excluded — decisions nobody wrote down.
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Metric Change Management
Last quarter’s board deck no longer reproduces, and nothing in the dashboard says why. The definition changed on Tuesday.
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Semantic Layer
The same filter copied into seventeen dashboards is seventeen definitions. A semantic layer exists so there is one.
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Transformation as Code: Models, Tests, and What It Means to Deploy a Data Change
Shipping application code changes behavior; shipping transformation code changes history too. What that asks of models, tests, documentation, and deployment.