Google unleashed an insane amount of news during its marathon keynote at the I/O developer conference today in California. A new music subscription service, Google Maps update, and messaging platform were just a few of the announcements.

Software and services was the name of the game at I/O this year, and here’s a roundup of everything Google unveiled earlier this afternoon:

Google has sent Microsoft a cease and desist letter over the YouTube app Microsoft built for Windows Phone. According to a letter obtained by Wired, Google demands that Microsoft immediately remove the YouTube app from the Windows Phone Store and then disable the app on all existing handsets by May 22.

In its letter to Microsoft, Google claims that the YouTube app allows users to download videos and strip out ads. Here’s part of the letter from YouTube’s Director of Platform Partnerships:

Google Maps is already one of the best mapping services on the planet, but Google isn’t content to rest on its laurels. At the Google I/O keynote this morning Google announced that it will launch a new version of Google Maps for iOS and Android later this year.

The new Google Maps will come with a simplified UI, as well as new features like real-time traffic, dynamic re-routing, reviews from Zagat and there will even be a dedicated Google Maps app for iPad.

Google Now was already pretty awesome, but now it’s getting even better on both iOS and Android. And it’s coming to the desktop as part of Google’s Knowledge Graph.

At Google I/O this morning the search giant announced that it has 41 new features that are coming to Google+ today, along with a redesigned news stream.

The newly designed stream is aimed to give Google+ users a deeper experience by adding multiple columns of content and ‘smart hashtags’ to connect posts to other Google+ users who aren’t circled.