SPDY is a transport protocol created by Google.
The reason for its existence is the shortcomings and inefficiency of HTTP/1.1.
Today, SPDY is no longer relevant, as all of its capabilities have been “transferred” into the new HTTP/2 specification which is seeing positive adoption around the web.
SPDY is less of interest in the context of WebRTC, where optimizations of performance for signaling tend to use WebSocket instead.
WebRTC Glossary is a collaborative space where users can learn more about WebRTC related terms. Anyone can also modify or add new terms to this glossary, but it requires registration to the site first.