Is amf0 still used ?
Is there any backward compatibility for amf0 in amf3?
Which encoding does the current version of Adobe flex use---amf0 or amf3?
amf0 is for as2. amf3 is for amf3, though you can switch to amf0 if needed.
So amf0 is seldom used
yes, there is backward compatibility
flex uses amf3.