What is it?
Google's Material Design is a design language developed by Google. It is used on various Google Apps such as Gmail, YouTube, Google Drive, Google Docs, Google Maps. The idea based off of paper and ink
It was first announced June 2014 at the Google I/O. It won gold award for the best contribution to UX. Google was more consistent in design. It was available for android mobile and web, also available for iOSMore info here