BARCELONA, Spain — Two days after Microsoft unveiled the latest additions to its Lumia lineup of smartphones, the technology giant has announced a tie-up with Germany’s Deutsche Telekom that will see the duo work together on “mobility and cloud services” in Europe. This basically means Deutsche Telekom will help push Lumia phones and related online services, including OneDrive and Office 365.

As with the announcement of the new mid-rage Lumia 640 and Lumia 640 XL phones earlier this week, today’s news was revealed at Mobile World Congress (MWC) in Barcelona, and it’s a notable deal for Microsoft as it looks to put a dent in Android’s sales.

This effectively means that mobile phone users in Austria, Croatia, Czech Republic, Germany, Greece, Hungary, Macedonia, Montenegro, Netherlands, Poland, Romania, and Slovakia will be marketed Microsoft’s hardware across Deutsche Telekom’s local subsidiary networks.

The specifics will vary by market, but broadly it will include things like co-branded marketing campaigns, sales and support training for staff, and customized app development.

With Microsoft set to ditch the Windows Phone branding and bring its desktop and mobile software under the same “Windows 10” roof within a few months, the timing of this deal means that Deutsche Telekom will become a Windows 10 launch partner. One of many Microsoft will reveal, no doubt, in the buildup to launch.