We have have had many posts on Session Description Protocol (SDP) here at werbrtcHacks. Why? Because it is often the most confusing yet critical aspects of WebRTC. It has also been among the most controversial. Earlier in WebRTC debates over SDP lead the to the development of the parallel ORTC standard which is now largely merging back into the core specifications. However, the reality is non-SDP based WebRTC is still a small minority of deployments and many have doubts this will change any time soon despite its formal acceptance.