Third-party applications that use Google Hangouts API will no longer work after April 25, 2017

When Google launched instant messengers Allo and Duo, it was said that Hangouts will remain a cross-platform chat for corporate users. And now is the time for changes that will help to follow the chosen course. Update the Google Hangouts FAQ reveals the service API, which will occur at the end of April this year. In fact, it means that any third-party application that is integrated with Google Hangouts, will stop working within a few months.

In addition to updating the FAQ, were sent notifications by e-mail the developers who uses the Hangouts API.

The text of the e-mail:

In order to streamline our efforts further, we will be retiring the Google+ Hangouts API that enables developers to build apps for the older version of Hangouts video calls. This API was originally intended to support social scenarios for consumer users as part of Google+, whereas Hangouts is now turning to focus on enterprise use cases.
We understand this will impact developers who have invested in our platform. We have carefully considered this change and believe that it allows us to give our users a more targeted Hangouts desktop video experience going forward.

Remains the ability to call via Hangouts DialPad and RingCentral and will be working integrate with enterprise service Slack, as well as with the services Toolbox, Control Room and the Cameraman.