Dashboard allows you to create/manage teams, publish API documentation with third-party developers etc with a lot of new features soon to be added like saving and sharing reports.
NB: You need to be online in order to access dashboard. Also note that Dashboard can only be accessed if the user is registered with APIC and is currently logged in to the instance.
Dashboard allows you to do stuff like
Publish and manage online docs
Save and share test reports (Coming soon)
APIC allows you to share stuff with your friends/colleague by creating a team. Lets create a team and add some members.