Key Takeaways
- Link building is the process of getting other websites to link to yours.
- Every few years, someone declares that links are dead as a ranking factor.
- A good backlink has three qualities: relevance, authority, and editorial placement.
- Content-Led Link Building The most sustainable way to earn links is to create content that other people want to reference.
- Paid links are the most common shortcut, and the most dangerous.
- The obvious metric is the number of referring domains pointing to your site.
- How many backlinks do I need to rank?
What Is Link Building?
Link building is the process of getting other websites to link to yours. Each link acts as a vote of confidence — a signal to search engines that your content is worth referencing. The more relevant, authoritative sites that link to you, the more Google trusts your pages and the higher they rank.
That's the simple version. The reality is more nuanced. Not all links are equal. A link from a major industry publication carries far more weight than a link from a random directory. And the way you earn links matters too — Google's spam policies are clear about what constitutes manipulative link building. The line between a smart strategy and a risky shortcut is thinner than most people think.
Why Links Still Matter in 2026
Every few years, someone declares that links are dead as a ranking factor. And every few years, the data proves otherwise. Ahrefs' research consistently shows a strong correlation between the number of referring domains pointing to a page and its organic search traffic. Links remain one of Google's core ranking signals.
What has changed is how Google evaluates them. The algorithm is better at identifying paid links, link exchanges, and PBN (private blog network) schemes. It's also better at understanding context — a link from a relevant industry site in the body of an article is worth more than a link buried in a footer or sidebar on an unrelated domain.
AI search engines add another dimension. When ChatGPT or Perplexity cites a source, they're often pulling from pages that already have strong backlink profiles. Links don't just help you rank in traditional search — they help you get cited in AI answers too.
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What Makes a Good Backlink
A good backlink has three qualities: relevance, authority, and editorial placement. The linking site should be topically related to yours. It should have its own authority (measured by metrics like Domain Rating or Domain Authority). And the link should appear naturally within the content, placed by the author because your page genuinely adds value to their article.
For a detailed breakdown of what separates a valuable link from a worthless one, see our guide on what makes a high-quality backlink. The short version: if you'd be embarrassed to show the link to a Google engineer, it's probably not worth pursuing.
Link Building Strategies That Work
Content-Led Link Building
The most sustainable way to earn links is to create content that other people want to reference. Original research, data studies, comprehensive guides, and unique frameworks all attract links naturally because they provide something that doesn't exist elsewhere. When a journalist needs a statistic or a blogger needs a source, they link to the page that has the answer.
This approach is slow but compounds. A well-researched data study can earn links for years after publication without any ongoing outreach.
Digital PR
Digital PR is the practice of getting your brand mentioned and linked in online publications — news sites, industry blogs, trade journals. It works by creating newsworthy angles: original data, expert commentary on trending topics, or contrarian takes that journalists want to quote.
The key difference between digital PR and traditional PR is the focus on the link. Every placement should include a backlink to a relevant page on your site. Our article on digital PR for link building covers the mechanics of how to pitch, what journalists actually respond to, and how to measure the SEO impact.
Guest Contributions
Writing for other publications in your industry is a straightforward way to earn editorial links. The approach works when you're contributing genuine expertise to a relevant audience — not when you're mass-producing generic articles for any site that will take them.
Target publications where your ideal customers read. Write something that demonstrates your thinking, not a thinly disguised sales pitch. The link in your author bio or within the article body is the SEO payoff, but the real value is positioning yourself as a credible voice in your space.
Broken Link Building and Resource Page Outreach
Broken link building involves finding pages that link to resources that no longer exist (404 errors) and suggesting your content as a replacement. Resource page outreach targets curated lists of links on a specific topic and pitches your page as a worthy addition.
Both tactics work because you're solving a problem for the site owner — they have a broken link or an incomplete resource page, and you're offering a fix. The success rate is modest, but the links you earn are typically high quality because they're editorially placed on relevant pages.
Core Concept
Not All Backlinks Are Equal
Link authority varies by source — higher authority = more ranking power passed to your page.
One link from a trusted, relevant publication can outweigh dozens of low-quality directory links. Focus on earning fewer, better links.
What to Avoid
Paid links are the most common shortcut, and the most dangerous. Google's algorithms are increasingly effective at detecting transactional link patterns — sudden spikes in links from unrelated sites, links from known link farms, and links with exact-match anchor text across dozens of domains. The penalty for getting caught ranges from individual page suppression to a site-wide manual action.
Link exchanges ("I'll link to you if you link to me") are another grey area. A few natural reciprocal links between genuinely related sites are fine. Systematic exchanges at scale are not. The same goes for PBNs, comment spam, and directory submissions to sites that exist solely for SEO purposes. For a fuller comparison, see our piece on paid vs editorial backlinks.
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How to Measure Link Building Success
The obvious metric is the number of referring domains pointing to your site. But quantity alone is misleading. Track the quality of links earned (domain authority of linking sites, topical relevance), the pages they point to (are your priority pages getting links?), and the downstream impact on rankings and organic traffic.
Tools like Ahrefs' backlink checker and Moz's Link Explorer make it straightforward to monitor your backlink profile over time. Review it monthly. Look for patterns — which content types attract the most links? Which outreach approaches have the best conversion rate? Double down on what works.
If you want a team that builds links through editorial quality rather than shortcuts, explore Indexed's link building services.
FAQ
How many backlinks do I need to rank?
There's no universal number. It depends on the competitiveness of your target keyword, the authority of your domain, and the quality of links your competitors have. For low-competition keywords, a handful of quality links may be enough. For competitive terms, you may need dozens or hundreds of referring domains. Focus on earning the best links you can rather than hitting an arbitrary target.
Is link building still worth the investment?
Yes. Links remain one of Google's strongest ranking signals, and they also influence AI citation. The investment is worth it when done correctly — earning editorial links from relevant, authoritative sites. It's not worth it when it means buying links from low-quality sources that put your site at risk.
How long does it take for backlinks to impact rankings?
Typically 4-12 weeks, depending on how quickly Google crawls and processes the linking page. High-authority links from frequently crawled sites tend to have faster impact. Links from smaller sites may take longer to be discovered and evaluated.
Link building is a long game. The links you earn today compound over months and years, strengthening every page on your site. At Indexed, we build link acquisition strategies grounded in editorial quality and genuine relevance. If you want to understand what a realistic link building plan looks like for your business, talk to a strategist — we'll walk through your current backlink profile and where the opportunities are.
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Written by
Anjan LuthraManaging Partner, Indexed
Anjan Luthra is Managing Partner at Indexed. He has spent over a decade inside high-growth companies building organic search into their primary acquisition channel, and writes about SEO strategy, AI search, and revenue a…