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UX Atlas
TermCraft conventionFoundational

Single Source of Truth

One place where the real version lives.

Definition

One authoritative definition of a value or component, from which all uses derive.

Craft convention. True because the industry converged on it. Breaking it costs familiarity, not correctness.

In plain language

One place where the real version lives.

Example

Tokens defined once and exported to CSS, iOS and Android, rather than maintained separately in each.

Each link says what the connection is, so you can tell a principle from an alternative from a thing people mix this up with.

Deeper reading

The full entry behind this definition.

Nearby in the Atlas

Adjacent territory, found through shared tags rather than a stated link.