So we're doing a full site rebuild, and before I select hosting, I want to find a solution for hosting the myriad of pdf files that we have on the existing site. I've been looking at various solutions, but most seem to be growing and trying to be full-blown CMS solutions rather than a DAM. Bonus points if there's a WP hook where users can upload a file and it gets moved to the DAM rather than being stored on the site.

Another reason for this is I want better file management of these pdfs, and also the ability to replace the files without changing links. (Because inevitably some author will provide a deep link to their paper, and then want to change the file without changing the link).

Anyone have a reccommendation for a solution that offloads all these files so they can be better managed?