Landing is detected rather than reported. URLs under an open cause stay under cheap watch, and when the finding disappears from all of them the fix is marked landed with a date. Nobody has to tell us the developer shipped.
The date matters more than the word. It is the moment the control set is chosen and frozen, and the moment the measurement window starts, so a fix that landed on the 3rd and a fix that landed on the 20th are measured over different months.
Landed is never rendered as a result. A client report that treated 'the defect is gone' as 'the traffic improved' would be making exactly the claim this product exists to test.
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