I am the assigned Gen-ART reviewer for this draft. The General Area Review Team (Gen-ART) reviews all IETF documents being processed by the IESG for the IETF Chair. Please treat these comments just like any other last call comments. For more information, please see the FAQ at . Document: draft-ietf-acme-authority-token-07 Reviewer: Linda Dunbar Review Date: 2021-11-03 IETF LC End Date: 2021-11-16 IESG Telechat date: Not scheduled for a telechat Summary: I am a little confused if this draft is to describe the challenges of ACME ? or if the term "ACME challenges" in the title is used to represent something special? Is "Authority Token challenge" to represent the challenge of Authority Token? What is the difference between the "Authority Token Challenge element" and the "Authority Tokey Challenge object"? Does the "ACME Challenge" the same as the "ACME challenge"? Can authors add the definitions to the Terminology section? Thank you very much Linda Dunbar