Last year, Google announced a new feature for Hangouts on the web allowing Google Apps customers to share links to Hangouts video calls so that external meeting guests may request to join if not explicitly invited. This feature helps external guests avoid errors when joining with alternate Google accounts.
The latest release of the Hangouts iOS app now has the same functionality, allowing external guests using the app to join Hangouts video calls from their mobile device with a meeting link provided by the organizer.
- Anyone in the same domain as the Hangout can make a video call externally accessible with the link
- Video calls that are shared with the link require someone in the Apps domain of the Hangout video call to accept those requesting access on the web
This feature will be coming soon to the Hangouts Android app.
Rapid release and Scheduled release
Reference by www.google.com