Ali Demirbaş - Lab
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Order Confirmation Page Product Suggestion A/B Test

Related products may give a buyer who has completed an order a reason to make another purchase.

  • Thank you
  • Additional purchase rate

Control vs Variant

Absent on one side, present on the other.

Changed
Presence
Page
Thank you
Difference
added

Hypothesis

Completing one purchase does not mean payment details can be reused or another order will be effortless. Keep confirmation details clear and measure completed additional orders, not clicks alone.

How to run this test

Primary metric

Additional purchase rate

Measure completed additional orders per assigned order-confirmation page visitor over a fixed follow-up window.

Other metrics

  • Value of additional ordersReport the value of completed orders that are separate from the original order.
  • Order summary accessTrack whether users open the order summary after seeing recommendations; order details must remain visible.
  • Order-related support requestsCompare questions about order status or tracking using the same denominator.
  • Confirmation-page exit rateInterpret exits alongside access to order information; leaving after confirmation can be normal.

What to check before and during the test

  • ChangeAdd a related-product recommendation module to the order-confirmation page.
  • Keep constantLeave the order summary, delivery details and confirmation content unchanged.
  • BehaviorReview recommendation interactions alongside completed additional orders.
  • Order informationDo not let the module obscure the order confirmation, number or delivery information.
  • Separate testsTest placement, recommendation count and recommendation logic separately.

Setup mistakes to avoid

  1. 1Do not place recommendations ahead of the order number or delivery details.
  2. 2Do not change the recommendation module and product-selection logic together.
  3. 3Do not make a second checkout obscure whether the original order is complete.
  4. 4Do not add an account-creation prompt to guest checkout in the same test.
  5. 5Keep the recommendation card dismissible and the order confirmation easy to access.