Internal linking improves Page Authority indirectly by enhancing content discoverability and guiding users through a website, which increases engagement, session duration, and the likelihood of pages earning external backlinks. Well-structured internal links help users navigate related content naturally, creating a network of interlinked pages that search engines interpret as a cohesive, valuable resource. Conversely, poor internal linking—such as isolated pages, confusing navigation, or irrelevant links—can reduce user engagement and make important content harder to find, limiting both user value and the flow of authority across the site. By prioritizing thoughtful, user-centered linking strategies, websites can simultaneously boost Page Authority and overall user satisfaction.