Google Sans (or Product Sans) is a geometric sans-serif typeface created by Google for branding purposes. It replaced the old Google logo on September 1, 2015. As Google’s branding was becoming more apparent on a multitude of devices, Google sought to adapt its design so that its logo could be portrayed in constrained spaces and remain consistent for its users across platforms.
Check out some demos below:
Note that this font is not open-source. According to https://fonts.google.com/license/productsans:
Google offers many fonts under open source licenses. This is not one of them. Please see fonts.google.com for options you can use.