Link building is an important part of SEO for SaaS sites, as it helps to build trust with both customers and search engines. One example of link building for SaaS sites is creating informative content, such as blog posts, tutorials, and white papers, and then promoting that content to other websites and blogs. This helps to increase the site's authority, as well as generate backlinks, which are essential for improving page rankings. Additionally, guest blogging is also a powerful link building tactic, as it not only establishes the SaaS site as an authority in its specific niche but also helps to drive more quality referral traffic.