Geographic information systems (GIS) have endured numerous evolutionary changes in information technology (IT), from mainframe computers to microcomputers, to personal computers, and to web and mobile technologies (Sinton and Kerski 2020). In this article, Joseph Kerski argues that GIS has not only endured as a persistent set of tools and methodologies for problem solving through these changes, but it has thrived through these changes. Each evolutionary change brought new capabilities and applications to GIS. Through each change, new audiences came to embrace GIS, bringing a wider diversity of discipline expertise. During the most recent change of GIS to the web, GIS also became increasingly connected with mainstream IT trends, such as cloud computing, machine learning, and distributed architecture. Indeed, web GIS has hastened the adoption of GIS through more users and a wider variety of organizations.