The document discusses the SPDY and QUIC protocols which aim to improve upon HTTP. SPDY focuses on multiplexing, prioritization, header compression, and server push/hints. QUIC aims to eliminate head-of-line blocking, support 0RTT connections, recover lost packets, and survive network changes. Both protocols aim to improve web performance but also face security challenges around things like certificate revocation and content inspection. The future may see both protocols widely adopted in web clients, servers, and network infrastructure.