Sites is a capability of ArcGIS Hub which enables you to build custom web pages and websites for sharing content like datasets, web maps, documents, and media. Sites is included with the basic license level of ArcGIS Hub. The premium license level of ArcGIS Hub includes additional advanced capabilities that allow you to create and launch initiatives. Initiatives can help you organize people and data around projects or goals. Each initiative can contain any combination of solutions, including configurable apps, web maps, story maps, dashboards, events, surveys, and website templates. Initiatives allow you to form teams within your organization and your community, to provide data and solutions needed to collaborate and work on projects together, and tools for monitoring engagement and progress. You can create your own custom initiatives to address your unique goals or use one of the ready-to-use initiative templates that come included with ArcGIS Hub to jumpstart your work.