I do a fair bit of work for orgs that have to meet accessibility requirements on anything they publish, and this one came with an explicit line in the contract about the PDF being properly tagged. Usually that means exporting from wherever, then a miserable cleanup pass in Acrobat fixing the tag tree by hand.
This time I built the report properly from the start, real headings, lists as actual lists, table headers with scope, alt text on the figures, and exported it tagged. Ran it through veraPDF and it came back clean, so the structure tree was actually right rather than something I had to repair. The image-heavy sections compressed down nicely on export too, so the final file isn't enormous despite all the charts.
Worth saying: the tool gets you a conformant file, but the human-judgement part, sensible reading order, alt text that actually says something, is still on you. Still, starting from a clean tag tree instead of fighting one is a completely different afternoon.