Meet by Google Hangouts is designed to be a business-oriented version keeping employees connected.
Google Hangouts March 2, 2017
An update from Google Hangouts FAQ admits that they will focus on Platform’s API; this explains that any consumer app that incorporates with Google Hangouts will be shut down starting this April 2017.
Google Hangouts January 9, 2017
Google Talk has been sending messages to the wrong recipients, raising some serious privacy concerns.
Google Hangouts September 26, 2013
Google+ Hangouts new feature allows people to start a Hangout and video chat while troubleshooting.
Google Hangouts May 3, 2013