Hans Bruinsma presented on optimizing websites through continuous testing and improvement. He discussed total quality management approaches like six sigma and kaizen that focus on measuring website performance and making changes to increase conversion rates. Some key techniques discussed include A/B testing different page elements and designs, multivariate testing of combinations of elements, and split path testing of user flows and journeys. The goal of ongoing optimization is to test improvements, measure results, and adopt changes that increase conversions until the optimal conversion rate is achieved.