The Viva Connections Dashboard feature, which at the time of writing has just gone into public preview, allows you to present adaptive cards to groups of end users within SharePoint and Microsoft Teams.
The video below provides a quick introduction to the new Dashboard and highlights some of the “out of the box” cards an admin can easily create. Fully customised cards can be coded using SharePoint Framework 1.13, which supports ACE (Adaptive Card Extensions).
Note: ACE is not covered in the video.
Note: For a deeper dive in to Viva Connections Adaptive cards check out this excellent video presented by Microsoft engineering.