Context
You are on a product team and need to define a metric for user activity to be used in dashboards and decision-making.
Question
-
Propose
2–4 candidate definitions
of “active user” (e.g., DAU/WAU/MAU), including the exact event logic (what counts as activity).
-
For each definition, discuss:
-
pros/cons and what product behavior it captures
-
sensitivity to spam/bots, accidental opens, and background activity
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how it behaves with different product usage patterns (daily vs occasional)
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how time windowing/timezone choices affect the metric
-
Recommend a
primary metric
plus
diagnostic and guardrail metrics
you would pair with it, and explain why.
Assume you have event logs with at least: user_id, event_name, event_time (UTC), platform, and relevant event properties.