
Checkout reliability
Test taxes, shipping, payment failures, discount rules, and confirmation messages. Successful payment should produce one accurate order. Check the destination as well as the message that sends people there.
Define the source of truth for stock and how delays or duplicates are resolved. A storefront can oversell when integrations update inconsistently. Use the findings to update the brief for the next stage.
- A written brief
- Named responsibilities
- Agreed review points




