Hello,
We're looking to share our regional data from our existing open data service but we're not clear from your StoryMap directions if we should just share our data with the AGOL group or if we also need to upload the data in addition (?)

These instructions in the StoryMap make it sound like it's as easy as sharing via a group: http://esriurl.com/CMSharingAGOLItems
But this sentance in the Story Map is what's confusing: "You upload your Service data by referencing the layer URL in the Community Maps Contributor App ."
Can someone please clarify this?
Thank you,
Amanda Huber