Link building and authority: getting cited to become credible

Why links still matter

At Google's origin, a simple idea: a page cited by many others is probably important. Twenty-five years later, backlinks — links from other sites to yours — remain one of the most powerful authority signals. Each incoming link is a kind of vote of confidence: "this site deserves to be cited". It's what separates two pages with equivalent content: with equal on-page, the one with authority wins. But not all links are equal, and that's where most entrepreneurs go wrong.

Quality over quantity: the only criterion that lasts

A link from a recognized site, in your topic, placed naturally in relevant content, is worth more than a thousand links from shady directories. Three dimensions define a link's quality: the authority of the linking site (a media outlet, a reference site), the topical relevance (a site in your sector), and the natural character (an editorial link, not an artificial exchange). Poor-quality links — link farms, mass buying — aren't just useless: they can trigger a penalty. The golden rule: never build a link you wouldn't be willing to show Google.

Measuring your authority: DR, DA and link profile

Tools translate authority into a score: Domain Rating (DR) at Ahrefs, Domain Authority (DA) at Moz, Authority Score at Semrush — all from 0 to 100, logarithmic (going from 20 to 30 is easier than from 60 to 70). These scores aren't official (Google doesn't publish them), but they give a useful comparative benchmark. Those same tools show your link profile: who cites you, with what anchors, from which sites. Ahrefs and Semrush are the references (€100–230/month); for a free overview, Ahrefs' free backlink checker or Moz's limited version is enough to start.

Healthy link-building strategies for an entrepreneur

Building links legitimately takes work, but several approaches are within an entrepreneur's reach:

• Content that deserves to be cited: a study, original data, a free tool, a reference guide. The most durable: you attract links instead of begging for them.
• Guest posting: writing for a blog in your sector in exchange for a link in the bio or content.
• Legitimate directories and listings: recognized professional directories, federations, partners, suppliers who list their clients.
• PR and podcasts: an interview, an expert quote, an op-ed.
• Broken links: spotting a dead link on a relevant site and offering your content as a replacement.

The common thread: every link comes from a real relationship or real value, not a hidden transaction.

Internal linking, your own link building

We saw it in the on-page chapter, but it's worth repeating here: internal links are the only form of "link building" you control 100%. You can't force another site to cite you, but you fully decide how your pages link to each other. Done well, internal linking concentrates authority on your strategic pages and speeds up their ranking. Before chasing difficult external links, make full use of this free and immediate resource.

Toxic links and disavowal: handle with care

Sometimes a site picks up unwanted links: automated spam, negative SEO from a competitor, the legacy of old practices. Google claims to know how to ignore most of these links, but in the case of a clearly polluted profile, Search Console's Disavow tool lets you ask Google to disregard them. It's a risky operation, reserved for proven cases: disavowing good links by mistake does more harm than good. For most entrepreneurs, the right reflex isn't to disavow, but to keep earning good links that dilute the bad ones.

Building brand authority, not just links

Google increasingly relies on entity and brand signals: is your name searched for? Are you mentioned (even without a link) on credible sites? Do you have a consistent presence (social media, business listing, reviews)? An "unlinked mention" of your brand on a recognized site has value, even without a technical backlink. For an entrepreneur, this points to good news: building a real brand — being useful, visible, recommended — feeds SEO as much as a link campaign. Authority is earned on all fronts at once.

Patience, again: authority is a slow asset

Like the rest of SEO, authority is built over time. A new site, even an excellent one, takes months to earn Google's trust — the felt "sandbox" of new domains. You don't make up that lag by buying links: you make it up by publishing regularly, getting cited naturally, and staying online long enough to become a reference. Authority is the slowest link in the chain, and that's precisely why, once earned, it durably protects your position against newcomers.