Plumbing
Noun · Slang & Abbreviations
Definitions
The underlying infrastructure, wiring, and low-level connective work that makes higher-level features possible but is rarely visible to end users. Engineers often contrast plumbing with product surface area.
In plain English: The hidden underlying technical connections that make everything work.
Example: "The user-facing change was tiny, but the plumbing behind it took most of the sprint."