I have found that digital story telling is using digital media, usually in a video, that incorporates text, video clips, photos, and narration to tell some sort of story. I noticed that some were also presented as powerpoint and other forms of multi-media. Almost like a commercial.

https://librarydigitalstorytelling.wordpress.com/what/

https://digitalstorytelling.coe.uh.edu/example_stories.cfm