API Design & Integration for E-commerce

We write the specification before the implementation, because the consumers' experience is the product and it deserves to be designed rather than discovered.

In e-commerce, every change must be justified by a controlled experiment against revenue. That single fact reshapes how api design & integration has to be built here, the guardrails, the approval points and the evidence trail are design inputs rather than things bolted on before go-live.

The workload we are most often asked to take on first is return-reason analysis, usually integrated against payment gateways. We start from the constraint, not the capability, what the system must never do, who signs off, and what happens when it is wrong.

Multi-model by default, so a provider outage is a routing decision rather than an incident. We hand over with runbooks, tests and a team that knows how it works, not a dependency.