What I said is correct for AWS. In retrospect I guess the context was a bit ambiguous.
(I will note that I was technically more right in the most obnoxiously pedantic sense since the hyphenation style you used is unique to AWS - `us-west-1` is AWS-style while `us-west1` is GCE-style :P)
(I will note that I was technically more right in the most obnoxiously pedantic sense since the hyphenation style you used is unique to AWS - `us-west-1` is AWS-style while `us-west1` is GCE-style :P)