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Data Quality, Data Reliability, and Data Observability: Telling the Three Apart
When a dashboard number gets questioned, teams often conflate three distinct problems: data quality (wrong or missing values), data reliability (correct values that arrived late or not at all), and data observability (undetected upstream changes that shift meaning). A simple three-question framework helps diagnose which problem you're actually facing — is a value wrong, is the data late, or did something change undetected? Naming the problem correctly determines who owns the fix and what action to take, saving hours of misdirected investigation.