Sub-brand and endorsed brand: brand architecture when expanding

The architectural spectrum and the position of each line

David Aaker describes brand architecture as a continuous spectrum: at one end is the "House of Brands" (each product line is a fully independent brand, like P&G with Tide, Pampers, Gillette), and at the other is the "Branded House" (everything carries a single name, like FedEx with FedEx Express, FedEx Ground). Sub-brands and endorsed brands sit in the two middle zones of this spectrum.

Sub-brand: the parent brand takes the lead position, while the sub-brand adds its own unique characteristics. The Honda Civic is a sub-brand of Honda. Customers buy because of Honda first, then Civic. The visual identity largely shares elements: colors, typography, and image style are inherited from the parent.

Endorsed brand: the child brand stands on its own name, and the parent brand appears as a seal of endorsement. Courtyard by Marriott is an endorsed brand. Courtyard builds its own personality for the mid-range business traveler segment, while Marriott only needs to be present to say: "we stand behind this place." The visual identities of the two are separated much more clearly than with a sub-brand.

Why this decision is harder than it seems

When you add a new product line, the first question is usually: "What do we name it? What color?" But the real question to ask first is: who does this new line serve, at what price segment, in what buying context, and do its customers overlap with your current customers?

If the new line targets the same customer group, with similar expectations and similar pricing, a sub-brand makes sense. The parent brand lends its credibility, and the new line does not need to be built from scratch. But if the new line targets a lower segment or an entirely different customer group, pulling in the parent brand name will damage both. Customers in the higher segment feel the brand they use is starting to slip, while customers in the new segment do not feel the line was designed for them.

Each additional brand is a real tax: operational costs, communication costs, and customer perception costs must be shared.

Principles of brand architecture, summarized from Brand Portfolio Strategy, David Aaker (2004)

Five questions before deciding on the structure

Aaker proposes a simple framework to check before naming or designing a logo. Sinh Vũ uses this framework as a mandatory step in every brand architecture project:

• Does the new line serve the same customer group as the parent brand, or a completely different one?
• If customers see both brands at the same time, do they think this is one house or two separate houses?
• Is the reputation of the parent brand aligned with the promise that the new line needs to deliver?
• Is the communication budget sufficient to build separate awareness for the sub-brand? If not, an endorsed or sub-brand will borrow some.
• If the new line fails, is there a risk of dragging down the parent brand?

You don't need to answer all five questions before starting the design, but if the first three questions lack clear answers, then every subsequent design decision will be guesswork.

The identification principle when the parent and sub-brand share assets

A sub-brand inherits the most from the parent brand: it often shares the main color palette, typography, and visual style. The sub-brand can only add a distinguishing feature like a secondary color, a unique icon, or a different layout. The principle here is: looking at any publication from the sub-brand, customers should recognize the parent first, then the sub-brand.

An endorsed brand is allowed to differ more, but it needs a small "connector" so the parent's seal does not look like a label stuck on from outside. That connector can be a shared secondary typeface, a way of using white space, or simply a fixed position for the parent logo on every document. Without a connector, the two brands look like two unrelated companies placing their logos side by side.

When architecture is overlooked: two common outcomes

The first outcome is dilution of the parent brand. The parent brand once held a clear position in customers' minds, but the more sub-lines are pulled in under the same name, the more that position fades. Customers no longer know what the brand is truly good at, who it serves, and what it stands for. According to Byron Sharp, brand identity only accumulates when visual and verbal signals are repeated consistently. Dilution is the reverse process: every new signal that does not match is a small erosion of what has been built.

The second outcome is that the sub-brand fails to stand on its own. The business separates the new line with an independent name but lacks the budget to build awareness from scratch and does not borrow enough credibility from the parent. The result is a nameless brand with no clear reason for customers to trust it, forced to compete on price because there is nothing else to rely on.

A principle to maintain both

Good brand architecture is not a pretty diagram on a presentation. It is a set of principles that answers practical questions: when the marketing team needs to create a banner for the sub-brand, what colors do they use, what font, where does the parent logo go, and how much space is allocated for the parent’s identity? If the answers depend on who is doing it that day, then the architecture only exists on paper.

Wally Olins reminds us that a brand is not found in a design file but in the behavior of the organization: how people speak, how they act, how they present themselves at every touchpoint with customers. Brand architecture is the same. It only becomes real when it is operationalized, not when it is approved.