This document discusses optimizing app store optimization (ASO) strategies in 2019. It recommends taking a holistic approach to ASO that involves understanding an app's traffic sources and how users behave on the app store page. The document outlines a 6-step process: 1) understand the traffic blend, 2) determine where potential lies, 3) hypothesize improvements, 4) test optimizations, 5) update the app store page, and 6) analyze impact. It also compares different testing methods and notes the industry is shifting to a more holistic view of ASO.