ArcGIS is a geographic information system (GIS) platform that allows users to gather, organize, analyze and share spatial data. It can be used on mobile devices, desktops and the web to improve planning, operations and decision-making. ArcGIS includes basemaps, demographic and imagery data. Developers can build custom applications using ArcGIS APIs and SDKs. Esri also offers maintenance programs, training, books and professional services to support ArcGIS users.