A startup's brand identity gets judged by two very different audiences at once — customers deciding whether to trust an unfamiliar product, and investors sizing up whether the founders can execute at a professional level.
Digital-first, not print-first
Unlike most industries, startup identities are used almost entirely on screens — app icons, favicons, in-product UI, pitch decks — before they're ever printed on anything. Design and test the mark in those contexts first; print applications are usually secondary.
Simplicity scales better than complexity
A startup identity needs to work at extremely small sizes (a browser tab favicon, a mobile app icon) as much as it needs to work on a full pitch deck cover slide. Detailed or intricate marks tend to fail at the smallest, most frequently seen sizes.
Design for both light and dark interfaces
Given how much of a tech brand's exposure happens inside software with light and dark modes, the identity should be tested and, where needed, adapted for both from the start, rather than assuming a single light-background version will always apply.
Flexibility for a brand that will evolve fast
Startups pivot, rebrand and expand product lines more frequently than most businesses. A slightly more restrained, systemized identity tends to age and adapt better than an overly specific, illustration-heavy one tied closely to a single product idea.
Credibility signals for a young company
Because startups often lack the track record older businesses can lean on, a polished, considered identity does extra work signaling competence and stability to early customers and investors who have little else to judge the company by yet.
The short version
Startup identity should be designed digital-first, simple enough to work as a tiny app icon, tested in both light and dark interfaces, and flexible enough to survive the company's inevitable evolution.