== Background
We do not have an existing measurement of user retention rate for logged-in Wikipedia readers (defined currently as someone who has 0 article edit count across all wikis), due to instrumentation only capturing specific "user touch" events, such as logging in or making a change in user preferences. This does not capture a logged-in user simply browsing and reading Wikipedia.
We will use a 1 month long sampled A/A test in TestKitchen to log the return frequency of a cohort of randomized users to get a better understanding of logged in user retention over that period. This baseline will be useful in helping us set key result goals for improving logged-in and active user retention on web next FY.
We are aiming to run the data collection from April 1 to May 1, 2026, across the top 50 trafficked wikis, to get a representative population of user retention.
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== Requirements
=== Acceptance criteria
- [] Review jennifer's spec, share any questions or concerns
=== BDD
- //For QA engineer to fill out.//
=== Test Steps
- //For QA engineer to fill out.//
=== Communication criteria
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=== Rollback plan
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//This task was created by Version 1.0.0 of the Reader Experience team task template using [[ https://phabulous.toolforge.org/ | phabulous ]].//