An item, also known as a content item, is a resource in the ArcGIS Platform portal that references content such as a map, layer, style, script, tool, file, or data service. An item is created when content is added to the portal, and is used to access and manage its properties and capabilities. An ArcGIS account is required to access the data management tools, applications, and APIs used to create and manage items. Item pages are used to view and manage item properties, such as the name, owner, title, description, created (date), tags, and sharing settings. An item can be used by referencing its URL or unique item ID.