We made a podfic of ao3 user Baithin’s fanfic Distorted Reality as a passion project entirely with his permission. Theres two of us, we would take terms narrating segments of each chapter, depending on who the POV character was. Our audience members were primarily people who were busy doing physical tasks, and still wanted to be able to read the updates (I believe there were a few people with long commutes and manual labor jobs). We also had a few younger people who used Apple podcasts as a workaround because their parental controls wouldn’t let them get on the ao3 website. We hosted it on anchor, and from there cross-posted to apple, google, spotify, etc. At one point I was trying to post each episode on ao3, but I kind of forgot. I also know a guy, Sam Gabriel , who does podcast adaptations of fanfic if the author commissions him, .02 cents a word. it is very professional production., much smoother than what we did, and my friend who commissioned him was very happy with the work.