The document discusses how mapping has changed over the past 30 years from 1983 to 2013. It outlines that communications (mobile phones, internet), the importance of location data, and the shift from no data to big data have driven significant changes. Technology advances, government policies around open data and standards, and major companies like Google, Apple, and Oracle becoming involved in mapping have also contributed to changes. Lessons learned include the enduring nature of good software, the central role of data access and management, and the need for easy to use and visually appealing map presentations.