Join Teams work meetings from Microsoft Teams (free) and vice versa

Microsoft Teams (Free) users can currently join Teams for work (or school) meetings only as guests, which requires them to use a browser and results in a sub-optimal experience. The new feature rolling out will allow these users to join Teams for work (or school) meetings in one click, without being redirected to the browser or asked to fill in their name/surname. They will also be able to continue collaborating with the meeting organizer and other participants via meeting chat after the meeting.  The feature will work in the opposite way as well, so Teams for work (or school) will just as easily be able to join meetings hosted by a Teams Free user with one click. This is associated with Roadmap ID: 167326

Teams to Skype for Consumer federation is coming

Here is a feature many of my customers have asked for ever since switching from Skype for Business Online to Teams: Teams/Skype Consumer chat and calling interop. 
The feature is listed as Roadmap ID: 53935

According to the message center, the feature will be rolling out in a disabled state, and admins will have to log into the Teams Admin Center to configure it under "external access":


Once configured, users can search the external directory, the same way they can search for internal chat users:

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Once set up, users can chat, call by audio or video, just as they can with other Skype for Business or Teams users. There are a couple of limitations in this initial release, such as no rich formatting, no mentions or emojis. It also looks like you can't search for a Skype ID or phone number, but it is all documented in the interop description found at docks.

And just like that, the world became a little smaller.....