New-to-brand metrics are only relevant for__________.

New-to-brand (NTB) metrics are specifically designed to identify whether a purchase was made by a customer who has not previously purchased from your brand on Amazon within a defined lookback window. Therefore, these metrics are only relevant for purchase events. Without a purchase, there's no transaction to classify as new-to-brand or existing. Pixel events and detail page view events are upstream actions that indicate interest or engagement, but they do not signify a completed transaction. While these events can precede a purchase, they do not inherently carry new-to-brand information themselves. NTB status is determined at the point of sale.