Backlinks are incoming hyperlinks from one website to another. When Site A links to Site B, that's a backlink for Site B. Search engines, especially Google, treat these links as endorsements—the more quality sites linking to you, the more authoritative and trustworthy your content appears. They matter because Google's ranking algorithm still weighs backlinks heavily in its assessment of page authority. A page with 50 high-quality backlinks will typically outrank a similar page with 5 backlinks, all else being equal. It's why competitive niches like legal services or finance in Toronto or Ottawa require aggressive link building to crack the first page. Not all backlinks carry equal weight. A link from the CBC or a .edu domain delivers far more ranking power than a link from a random blog. Google evaluates the linking site's own authority, relevance to your topic, and whether the link is editorial or paid. Links from relevant industry sites in your niche pass more value than unrelated directories. The anchor text—the clickable words in the link—also signals relevance. If 20 sites link to you with "Ottawa SEO services" as anchor text, Google infers your page is about that topic. Over-optimized anchor text triggers penalties, so natural variation matters. Backlinks also drive referral traffic. A well-placed link on a high-traffic site can send qualified visitors who actually convert. We've seen clients get consistent leads from a single link on an industry resource page that ranks well. At Ottawa SEO, we've built thousands of backlinks across our portfolio. ThePattern: earning links through genuine content value or strategic outreach beats buying links or spammy tactics every time. Google's algorithms catch manipulative link schemes eventually, and the penalties can tank your rankings for months. Quality over quantity isn't just advice—it's survival in 2025's SEO landscape. Focus on building links that would still have value even if Google's algorithm changed tomorrow.