In terms of ArcGIS Hub, Sites are the central domain entity. A Site is backed by an item, it has a layout that can include a header and footer, and a theme.

In ArcGIS Online, the item type is Hub Site Application

In ArcGIS Enterprise, the item type is Site Application

In both environments, we use Hub.js to work with sites via the HubSite class, which operates on IHubSite objects.

API Links