Link building is acquiring hyperlinks from external websites that point to your domain. Search engines like Google treat these inbound links as endorsements—sites that earn links from trusted sources rank higher because algorithms interpret those links as signals of quality and relevance. Not all links carry equal value. A link from a government site (.gc.ca), university, or established news outlet moves the needle more than a directory listing or forum signature. Context matters too. A link from a robotics engineering blog to your industrial automation company is worth more than a link from a food blog, even if both sites have similar domain authority. Link building breaks into several methods. Editorial links happen when someone references your content naturally because it's useful—these are the gold standard. Outreach-based links require pitching your content or expertise to site owners, journalists, or bloggers. Resource page placements, guest posts, and digital PR campaigns fall here. Then there are structured tactics like sponsorships, partnerships, or supplier/client relationships that yield legitimate links as part of doing business. At Ottawa SEO, we focus on earning links that would exist even if Google disappeared tomorrow. That means creating assets people actually want to reference—original research, tools, or genuinely helpful guides—and then doing targeted outreach to the right 50 sites instead of spamming 5,000. We track referring domains, link velocity, and anchor text distribution because unnatural patterns trigger manual reviews. What kills link building efforts: buying links from farms, reciprocal link schemes, over-optimized anchor text (stuffing "Ottawa commercial roofing contractor" into every link), and links from penalized networks. Google's algorithms have seen it all. The key is building relationships with real site owners in your space and giving them a reason to link that benefits their audience. Quantity without relevance is noise. Ten contextual links from industry sites outperform 100 random directory submissions every time.