Sorry this is a day late.

This document explains what traffic engineering, on the Internet, is.  It is a primer. It is also a history book, and discusses the lessons learned since the original 3272, with many references to RFC's most of them published since that document.

This is a magnum opus.  This document is READY. It seems to adequately cover application-level things by describing ALTO and related items.

I found section 1.1 a little hard to follow.  I'm not sure why, and I have no recommendations to make.

Consider adding definitions of "ingress node" and "egress node" to 1.4

Sec 2.1, maybe change the first sentence to add "...includes the following sub-contexts:"

"the ability of the network administrators to translate policies into network configurations."  Nice to see the human aspect mentioned.

Sec 2.3, "A network-wide view of the topology is also a must for offline planning" Presumably not the WHOLE network; maybe add clarification?

Sec 4.1, do you need/want definitions or references for STT and ALB methods?

Sec 5.1.2.3, To a customer, a slice looks like ... "with additional information about the level of service required between endpoints"  s/required/provided/ ?

Sec 5.1.3.1.1 typo's "Exampls" and "netrock"

Sec 5.1.3.12 space before colon and while you're there, maybe s/;/, or/  And the "four types" described should be an unnumbered list or some such.

Sec 6, I was surprised to see the definitions of functional/non-functional be in a different order from the sections that followed. Maybe a sentence at the end explaining why. "This document first summarizes the non-functional requirements, and covers the functional requirements in the following subsections."

In 6.1, is the ordering of attributes arbitrary? Could/should it be made alphabetical?

In 6.5, typo "conforma"

In 6.6.2, should "1+1" be "1:1" ? Apparently not, since 1+1 is not the same as 1:1  This should be mentioned.

In 6.7, "Networks are often arranged in layers"  Should arranged by implemented?  What about Ogres (a little Shrek Joke, https://youtu.be/-FtCTW2rVFM?t=43) 

Sec 8, "taken over a lot of" stuck out to me as rather informal.  "Some other southbound interface"  What's a southbound interface?  "such as a multi-national" add "enterprise"