Material design (codenamed quantum paper) is a design language developed by Google and announced at the Google I/O conference on June 25, 2014. Expanding upon the "card" motifs first seen in Google Now, it is a cleaner design with increased use of grid-based layouts, responsive animations and transitions, padding, and depth effects such as lighting and shadows. Designer Matías Duarte explained that "unlike real paper, our digital material can expand and reform intelligently. Material has physical surfaces and edges. Seams and shadows provide meaning about what you can touch." Google states that their new design language is based on paper and ink.
Material design is used extensively in Android 5.0 "Lollipop", which is the newest version of the Android operating system. Material design will gradually be extended throughout Google's array of web and mobile products, providing a consistent experience across all platforms and applications. Google has also released application programming interfaces (APIs) for third-party developers to incorporate the design language into their applications.