Before comparing tactics head to head, it's worth being precise about what each one actually does inside Google's ranking model.
Link Building
Link building is the process of acquiring backlinks from other websites to your own. Each qualifying link passes a signal of authority — Google's systems treat a link from a trusted, relevant site as a vote of confidence. The cumulative weight of those votes contributes to your domain authority and your ability to rank competitively for target keywords.
What link building doesn't do: it won't fix thin content, resolve technical issues, or build brand recognition on its own. Links amplify what's already on the page. If the destination page is weak, the link's value is limited.
Brand Signals
Brand signals encompass the mentions, citations, and entity-level recognition that Google associates with your brand — including unlinked mentions, social presence, search volume for your brand name, and how consistently your entity appears across the web.
Google's entity-based understanding of the web means a brand that appears frequently and consistently in relevant contexts earns a form of authority that links alone don't fully capture. Brand signals matter most for sites competing in crowded spaces where Google is trying to differentiate between similar-looking competitors.
Digital PR
Digital PR is the practice of pitching journalists, editors, and content creators with stories, data, or expert commentary that earns editorial coverage — ideally with a backlink included. It sits at the intersection of traditional PR and SEO.
Done well, digital PR earns links from high-authority publications that are nearly impossible to reach through standard outreach. It also builds brand visibility, which reinforces brand signals. The tradeoff: it's slower, less predictable, and requires a compelling angle that journalists actually want to cover.
Understanding these three as distinct tools — rather than interchangeable terms for the same thing — is what makes it possible to sequence them intelligently.