ArcWatch | Create an Open Data Site in Three Steps

"It’s easy to create a publicly accessible site for sharing data in a variety of formats with ArcGIS. If your organization has an ArcGIS Online subscription, you already have access to the comprehensive open data capabilities the ArcGIS platform offers—they are free and come included as part of your subscription. Once open data is enabled for an ArcGIS Online Organization, the management of that open data occurs inside ArcGIS Hub."