QUIC (Quick UDP Internet Connections) is a new transport protocol for the internet, developed by Google. QUIC solves a number of transport-layer and application-layer problems experienced by modern web applications, while requiring little or no change from application writers. QUIC is very similar to TCP+TLS+HTTP/2, but implemented on top of UDP. Having QUIC as a self-contained userspace protocol allows innovations which aren’t possible with existing protocols as they are hampered by legacy clients and middleboxes.