Hi authors, hi list, I am the assigned IoT Directorate reviewer for I-D.ietf-cbor-array-tags. Please treat this review as you would treat any other WGLC comment. The document defines 26 IANA CBOR tag numbers in the specification-required space and one tag number in the first-come-first-served space. The tags enable the use of typed, multidimensional, and homogeneous arrays in the CBOR (RFC 7049) enabling multiple compinations of array composition. Serialization of corresponding CBOR arrays is defined in text and complemented with comprehensive summaries in table format. The specified CBOR tags provide convenience functions (e.g. retaining endianness) that reduce workflow complexity and are eliminating unnecessary serialization overhead in comparison to the original array tag specified in RFC 7049. This document provides significant improvements for the conveyance of various types of structured data processed by things of any size. The document is well written, comprehensible, and concise. Various nits have been resolved based on other WGLC comments. The tag specification uses CBOR examples (figures) that sightly diverge from the style used RFC 7049. The style used is in this document is an improvement with respect to readability and is consistent with other documents. The document is ready for approval. Viele Grüße, Henk