ArcGIS is an integrated Web GIS that is supported by services. These are abstracted in a geoinformation model that's managed by the portal, and then accessible by a number of apps, which are the growing part of this system.

Our intention and aspiration is to continue building out thematic information about every subject - basemaps, imagery, demographics, landscape data, etc. - so anyone can use it to access thousands of authoritative maps.

ArcGIS includes a Living Atlas of the World. It's like a large living library of geographic information.

Jack Dangermond Quotes