Our ads revenue dropped suddenly. What should we do? How do we figure out the cause, and how would you explain this to the senior management team?

Example answer

I would first establish the size, time window and reliability of the drop. Reconcile the dashboard with billing and delivery records, check data freshness, time zones and currency, and look for logging changes, outages or release incidents. A measurement failure and a real revenue loss require different actions.

For impression-based revenue, I would decompose it as paid impressions × realized revenue per thousand impressions / 1,000. Then split impressions into traffic, ad opportunities, fill and rendering; split yield by advertiser, placement, geography and auction conditions. Use comparable periods and keep clicks or attributed purchases as additional diagnostics where the charging model needs them.

I would compare affected and unaffected segments, annotate deployments and campaigns, and assign owners to the strongest hypotheses. A contemporaneous change is evidence to investigate, not proof of cause. If an incident is ongoing, use the approved incident and rollback process while investigation continues.

Executive update

State the verified impact, affected segment, what has been ruled out, leading hypotheses and confidence, current mitigation, owner and next update time. Say explicitly when the cause or financial exposure is still uncertain. Do not present an untested product change as the remedy or claim revenue recovery before billing evidence supports it.

Follow-up

What if the revenue dashboard is delayed? Label the incomplete period, use independently checked delivery indicators for triage and postpone a final revenue estimate until the records reconcile.