Easiest/best way to share PDFs with the public?

Hello, I've had a request from a non-tech-savvy associate who is presenting at a conference in June and wants to provide URLs to the attendees so that they can go read/retrieve a set of PDFs for more info.  

He is wondering what the most straightforward way to host these PDFs so that his listeners can find them, and he doesn't want to burden them with a login or any other hoops or anything.   Ideally, they can walk away from his presentation and just browse immediately to the PDFs on their phones, for example.

What is the best/easiest way to do this nowadays?  I looked at google docs and I can upload PDFs, but I believe that folks would also have to create an account to get to them, is that correct?  Our company has an FTP site but it requires a login, and he's not really doing this for the company anyway.

Any thoughts are appreciated.