Internal linking matters because Google's algorithm still relies heavily on links to understand your site's structure and determine which pages deserve to rank. Every internal link passes PageRank (ranking power) from one page to another, meaning you control how authority flows through your domain. Without deliberate internal linking, your best content often stays buried while mediocre pages waste link equity. The discovery benefit is equally critical. Googlebot finds pages by following links, so orphaned pages (no internal links pointing to them) can take weeks to index or never get indexed at all. We've seen new articles get indexed within hours when linked from high-authority pages versus 3-4 weeks when published without internal links. For sites publishing daily content, that delay kills traffic potential. Internal links also establish topical authority through semantic clustering. When you link related articles together using descriptive anchor text, you're signaling to Google that these pages form a comprehensive topic hub. This is why pillar-cluster models work. A pillar page linking to 8-12 supporting articles, with those articles linking back and to each other, consistently outranks standalone pages targeting the same keywords. The anchor text you use matters more than most realize. Exact-match anchors for internal links carry zero penalty risk (unlike external links) and directly inform Google what the target page ranks for. Generic "click here" links waste that signal. At Ottawa SEO, we audit internal linking as a primary lever during site optimizations. Most sites have a power law distribution where 5-10% of pages hoard 80%+ of internal links, leaving hundreds of pages with one or two links. Redistributing that link equity strategically, especially to conversion-focused pages, typically moves rankings within 2-3 weeks. We aim for every important page to have at least 3-5 contextual internal links from related content, and we update older posts quarterly to link to newer material. It's manual work, but the ROI beats most technical fixes.