Jennifer Wong's presentation at the Seattle Interactive Conference 2014 emphasizes the critical importance of mobile app measurement, highlighting that 80% of smartphone usage is dedicated to in-app media consumption. It outlines the mobile marketing landscape, discusses the necessity of accurate attribution for installs to avoid erroneous payment, and provides insights on how to analyze multi-touch and cross-device interactions. Key takeaways include understanding install assists, the significance of varied attribution windows, and leveraging mobile data to optimize marketing strategies.