Meta Ads Manager: investigating an overnight 10% fall in the ad publish rate

You are the product manager for Meta's Ads Manager, the tool advertisers use to create ad campaigns for Facebook. Publishing is one step in that creation flow, and you track an ad publishing rate for it. You discover that this rate has been 10% lower since 10 PM last night. What would you do? ```hint Read the shape first A clean step at one clock time points to different causes than a slow slide. Before listing causes, work out whether the top or the bottom of the rate moved. ``` ### Clarifying Questions - How is the publishing rate defined: published ads divided by ad drafts started, or simply the number of ads published per hour? - Is the fall 10% relative to the previous level or 10 percentage points, and which baseline is it compared with: the same hours last week, or the hours just before 10 PM? - Which time zone is 10 PM in, and did the rate drop in one step or slide down over a few hours? - Does the figure cover ads submitted programmatically by agencies and partner tools, or only the Ads Manager interface? ### What a Strong Answer Covers - Confirming the drop is real before chasing causes: definition, logging, data delays and baseline - Using the sudden 10 PM onset to rank discrete events such as releases, configuration or policy changes, and dependency failures - Segmenting by entry point, platform, region, advertiser type, ad format and funnel step to localize the cause - Separating internal from external causes and checking them in a sensible order - Acting on the finding: impact sizing, rollback or mitigation, advertiser communication and prevention ### Follow-up Questions - The drop is confined to one ad format in one country. What does that suggest, and who do you contact first? - Nothing changed internally and the drop is spread evenly across every segment. What do you check next? - How would you estimate the revenue at risk from this drop?