A backlink is another website linking to yours, and Google treats each one roughly like a vote of confidence, a small local bakery linked to by the city's tourism board signals real-world credibility no amount of on-page keyword optimization can fake. Not all links carry equal weight though, a link from an established, relevant site matters far more than ten links from low-quality directories nobody visits.
The tactics that work share one thing in common, they give the other website a real reason to link. Writing a useful guide, original data, or a tool other sites want to reference to their own readers earns links naturally. Getting quoted in a local news story or industry roundup works the same way. Guest posting on a relevant, real site still works when the content is useful, not just a thinly disguised advertisement stuffed with links.
What to avoid matters just as much: buying links, joining link exchange schemes, or submitting to spammy directories violates Google's guidelines and risks a manual penalty that erases rankings overnight. A slower approach earning 5 genuinely relevant links beats 50 purchased ones every time, since Google actively looks for and discounts, or penalizes, unnatural link patterns.
Anchor text, the clickable words in a link, matters too: a natural link profile has varied anchor text, sometimes a brand name, sometimes a generic "click here," sometimes the actual target keyword, while a pattern of dozens of links all using the exact same keyword-stuffed anchor text looks manufactured to Google and can trigger exactly the kind of scrutiny that leads to a manual penalty.
Tracking which pages earn links over time reveals what kind of content a specific audience finds worth referencing, which is far more useful than guessing at link-building tactics in the abstract. A natural mix of anchor text tends to happen on its own when links are earned organically rather than requested with a specific phrase in mind.
Broken link building is a specific, underused tactic worth knowing: finding broken (dead) links on relevant, authoritative sites, then reaching out to suggest a working replacement — ideally a page the outreach sender controls — as a helpful fix instead of a cold link request. Site owners are often more receptive to fixing something broken on their own site than to a generic request for a link that offers them nothing in return.
Unlinked brand mentions represent a genuine, often-overlooked opportunity: a site that mentions a business by name without linking to it is already halfway to a backlink, and a polite outreach message asking them to add a link is typically an easier, higher-success-rate request than pitching a site that has never mentioned the business at all. Tools that track brand mentions across the web can surface these opportunities that would otherwise go unnoticed.