ArcGIS Online is a free Esri software ready to use with nothing to install or setup. It’s software delivered as a service, giving you and your team intuitive tools to create and publish maps and apps on demand. You stay in control of your data, and empower everyone with easy-to-use maps on the web.
Users can access to a rich collection of basemaps, demographic maps, image services, and data. These maps are a great foundation for your work and are created only from the authoritative content from commercial data providers and the GIS user communities around the world.
ArcGIS Online gives you an easy-to-use and intuitive workspace for collaborating with others in your organization. You can publish your data as feature services directly from within ArcGIS Online, or as tiled map services using ArcGIS 10.1 for Desktop. Your published services are hosted in Esri’s secure cloud and you maintain all ownership and rights. You can keep your data private within your organization or share it publically for others to use (more…).
ArcGIS Online key features:
For more information on key features visit: http://www.esri.com/software/arcgis/arcgisonline/features
ArcGIS Online Premium (annual subscription)
ArcGIS Online Premium gives to organizations a complete package: from the management of the infrastructure (hardware and software) to advanced management functionality to geographical information. Includes storage capacity, management and hosting of web GIS services.
ArcGIS Online users do not required:
Sign up for ArcGIS Online Free 30-Day Trial for Organizations.