Journal article
APIs as product boundaries (part 5)
Where web meets CRM, ERP, and payments — contracts matter.

Integrations fail when payloads and error handling are undefined. We document contracts, retries, and alerting before writing UI.
That keeps support tickets down when vendors change fields or rate limits.
Reliable plumbing is how digital products stay boring in the best way.
— SIMHA Journal · issue note 70
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