The technology for Google Voice originally came from GrandCentral, which was founded in 2005 by Craig Walker and Vincent Paquet. After being acquired for $95 million in 2007, it was relaunched in 2009 with many similar features and some new ones.
New features included things like voicemail transcriptions and SMS managing.
The evolution of the product has seen it now become integrated into the Google Hangouts application since September 2014.
The most recent update to the service, in January 2017, Google overhauled the user interface with Material Design and made group and photo MMS natively supported in Voice.
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