ArcGIS Online is a collaborative, cloud-based platform that allows members of an organization to use, create, and share maps, scenes, apps, and data, and access authoritative basemaps and ready-to-use apps. Through ArcGIS Online, you get access to Esri’s secure cloud, where you can manage, create, and store data as published web layers. Because ArcGIS Online is an integral part of the ArcGIS system, you can use it to extend the capabilities of ArcGIS for Desktop, ArcGIS for Server, ArcGIS Web APIs, and ArcGIS Runtime SDKs. Read more here.
To request an organizational account please contact your Geospatial Librarian at firstname.lastname@example.org
You will be sent a invitation from ESRI. Once you accept that invitation, follow the instructions provided to complete the account setup.
Open a web browser and navigate to https://arcgis.com. Once on the page, click the Sign In button in the top right of the page.