Creating an ADA Compliant Document with pdftex

What is the current best method to create an ADA Compliant PDF document using LaTeX and pdftex?

I see postings from 2015 and perhaps even 2018 on this topic. I recognize that some parts of the work include adding pdf titles and other meta-content.

Does someone have the equivalent of a template (header file) that can be used? What precautions must be taken with hyperref links internally and externally? Should this problem instead be pushed off to an off-line validation service (or run through Acrobat Pro)?

I ask as an instructor developing documents for on-line instruction in courses in the USA, where the certification now requires an ADA validation step.