A checkout success redirect proves a browser reached a URL — not that anyone paid. Why entitlement must come from a verified event, not a redirect.
A customer finishes checkout and the payment provider sends their browser back
to /success. Your app shows a green check. That is useful user experience. It
is not evidence that the order was paid.
The browser controls the URL it visits. It can revisit that URL, change its
query string, share it, or open it without completing checkout. If visiting
A payment API returns success. The interface turns green. Everyone relaxes. But what exactly...
Your CI checks that the payment link in your README still works. It curls the URL and asserts 200....
A payment isn't a thing you fetch. It's a thing that happens. A card gets authorized in one request....
A web app can look finished while its most important actions do nothing durable. A Save button may...
Why a live payment is not a release test The riskiest way to test a SaaS checkout is to...
A successful payment is not the same thing as an active product entitlement. That distinction...
