Amazon Affiliates uses a 24-hour cookie to track purchases. The cookie activates when someone clicks your affiliate link. You earn a commission for any items they buy within 24 hours. The cookie expires after 24 hours unless the user adds items to their cart. If items are added to the cart, the cookie extends to 90 days for those products. You should encourage users to shop quickly to benefit from the cookie. The cookie applies to all eligible products, not just the linked item. You should focus on driving traffic to increase clicks. The 24-hour cookie can boost your earnings.