The document discusses tips for migrating GIS applications to mobile. It covers the differences between desktop and mobile, and three approaches: a web app plus native mobile app; a web app plus hybrid/responsive web app; or a web app only. Key tips include starting prototyping, analyzing usage, re-evaluating workflows, expecting to rewrite code for mobile, testing on multiple devices, and understanding browser differences. The presenter is Andy Gup from Esri who then demonstrates a mobile GIS application.