How to perform a technical SEO Audit. From Bill Hartzer’s session at the 2015 SearchFest conference in Portland, here is the presentation about performing a highly technical SEO Audit of a website. Bill Hartzer has literally performed hundreds of SEO Audits over the past 10 years, and is a master at performing highly technical SEO Audits of websites. He is the Senior SEO Strategist at Globe Runner, based in Dallas, Texas.