Helpful resources
ArcGIS Online provides ArcGIS users with a set of foundation services that is deeply integrated with ArcGIS. It is hosted by ESRI and powered by ArcGIS Server and ArcGIS Data Appliance. The content made available through ArcGIS Online includes standards-based web services for visualization and analysis, as well as ready-to-use maps, layers, and templates to get started quickly. The ArcGIS Online content is updated and added continually, and is available through both no-cost and subscription licenses.
The architecture diagram below illustrates how the participating software components are divided into logical layers and physical tiers. Please reference ESRI's GIS Dictionary to learn about specific software components and terminology.
