Normally when laymen say "digitized" they mean one of two things: scanned images in a PDF or fully transcribed (and possible formatted) text extracted from the scan. The Complete New Yorker you're thinking of was mostly the former, with a bit of indexing (table of contents pointing to the PDFs if I remember correctly).

This latest digitization project does the latter, transcribing the text into their existing content management system and as far as I can tell, preserving much of the formatting. This comes with full text search, allows cross linking between articles, and all that good stuff.

I suspect that since they include an LLM summary and started this digitization project in early 2024, this was enabled by LLMs.

If I’m reading this correctly, they now have all their historic articles loaded into their CMS. I think they previously just had a system where you could page (and maybe search?) through scans of old issues, which is also cool but not as versatile.

When a lot of content was being put out on CD/DVD, a number of publications did but they are not straightforwardly accessible these days because they're usually on an old version of Windows. (Yes, if you want to make a project of it, you can probably get into them but has never been worth it for me.)