Document: 
Intended RFC status: Proposed Standard
Review type: artart - Last Call review
Reviewer: Henry S. Thompson
Review Date: 
IETF Last Call Date: 

Summary: 

Caveat: I'm not familiar with the group comms family of RFCs or the
applications they support, so this review is from an outsider's
perspective.

Minor points

Section @. I note that one of the two referenced examples of candidate
application profiles, "A publish-subscribe architecture for the
Constrained Application Protocol (CoAP)" [1], has expired.  I'm not
sure how much it matters to have reasonably mature examples, but
without _some_ good reasons to suppose that there's a community out
there waiting to implement this framework, its future does seem a bit
shaky...  There is of course a chicken-and-egg problem here which may
explain the lack of progress.

Section 2. This is the first point where the actual connection between
ACE and this document is made clear, that is, that the KDC is the
Resource Server _per ACE_.  Simply adding ", per ACE," to "Resource
Server" in para 2 of Section 1 would do the trick.

Nits

[1] https://datatracker.ietf.org/doc/html/draft-ietf-core-coap-pubsub-12