Brand architecture & portfolio · Core
Brand extension
Also called: line extension
ELI5
Use of an existing brand name to enter a new product or category.
Used in conversation
“The brand brief needs a concrete definition of brand extension.”
Pitch context
You will see “Brand extension” in brand decks, campaign plans, research reports and performance reviews when the discussion reaches brand architecture & portfolio.
Why it matters: In brand architecture & portfolio, a loose definition can change rights, obligations, approval, disclosure or enforceability.
Caution
Meaning, enforceability and required process vary by jurisdiction and agreement; this definition is not legal advice.
Connected terms
- Line extensionThe search label “line extension” can route to both entries.
Sources & evidence · 5
Direct term-level sources and supporting source families.
- American Marketing Association — Definitions of Marketing and BrandDirect source · institutional · checked 2026-08-16
- U.S. Federal Trade Commission — Advertising and Marketing GuidanceSupporting source family · primary · checked 2026-08-16
- Google Analytics Help — Google Analytics dimensions and metricsSupporting source family · primary · checked 2026-08-16
- Google Ads Help — Google Ads metrics and reportingSupporting source family · primary · checked 2026-08-16
- Interactive Advertising Bureau — Measurement guidelines and standardsSupporting source family · institutional · checked 2026-08-16