Zombie APIs Are Costing You More Than You Think: A Risk Quantification Guide
Zombie APIs are API versions or endpoints that were once known and documented, but were never properly retired. A team ships v2 of an API, tells everyone to migrate, and assumes v1 is dead. In reality, v1 is still running on a server somewhere, still accepting requests, and still connected to production data. This is different from unmanaged APIs, which were never documented in the first place. Zombie APIs were documented once.