Caridy Patiño
At TC39, the EcmaScript standards committee, Caridy Patiño gave a great talk on Realms. slides 
News via Mark Miller.
# Stage 2 - Where are we right now? Realms are about Intrinsics, Primordials, Contour, Global object and the this value. - No more hooks or stdlib. - Considerably simpler, smaller, and represent an incremental step.