Adobe offerings to support the collaboration need

Value proposition for the involved personasAdobe offeringInvolved surfaces
Creative users discover assets from Experience Manager, open and use them, edit and upload changes to Experience Manager, and upload new files into Experience Manager, without leaving Creative Cloud apps.Adobe Asset LinkAdobe Photoshop, Adobe Illustrator, and Adobe InDesign.
Business users simplify opening and using assets, editing and uploading changes to Experience Manager, and uploading new files into Experience Manager from the desktop environment. They use a generic integration to open any asset type in the native desktop application, including non-Adobe ones.Experience Manager desktop appExperience Manager desktop app on Win and Mac desktop
Marketers and business users discover, preview, license and save, and manage the Adobe Stock assets from within Experience Manager. Licensed and saved assets provide select Adobe Stock metadata for better governance.Experience Manager and Adobe Stock integrationExperience Manager web interface

This article focuses primarily on the first two aspects of the collaboration needs. Distribution and sourcing of assets at scale is briefly mentioned as a use case. For such needs solutions, consider Adobe Brand Portal or Asset Share Commons. Alternate solutions such as Brand Portal, solutions that can be built based on Asset Share Commons components, Link Share, using Experience Manager Assets should be reviewed based on specific requirement.

Creative Cloud connections for Experience Manager, decide which capability to use