
01 · Retail & e-commerce
The checkout that only fails for some people
- The problem
- Sales dip and nobody can say why. The site loads, test orders go through on the office machine, and the analytics show traffic arriving as usual. Somewhere between one payment method, one browser and one shipping region, a proportion of customers is hitting a wall and silently going elsewhere.
- What we build
- Synthetic checkout runs against a real payment sandbox across several browsers and regions, error tracking that groups failures by browser, device and payment provider, and alerts on conversion falling outside its normal band for the time of day rather than on a fixed number.
- What changes
- The failing combination is identified from the alert itself rather than from guesswork, and the same monitoring becomes the early-warning system for the next provider change nobody told you about.


