Ingest events via a managed bus, land them in your warehouse with strict schemas, then build a small set of materialized views for rare indicators. Use notebooks for analysis, version dashboards carefully, and publish alerts through chat and CRM integrations. Keep ownership explicit so data quality has a real, accountable home from day one.
Start with simple, transparent rules enhanced by rolling baselines and seasonality awareness. Add EWMA or CUSUM for drift, then layer Bayesian shrinkage for stability. Pilot each rule with a small audience, collecting anecdotal outcomes and hard metrics. The right detector is the one your team trusts enough to act on repeatedly.