[ryanbrunner]

In addition to the audio, there's also show specific metadata like episode names, summaries, and show notes, which can get pretty comprehensive. It would maybe be a smart idea to have a copy of those outside of your hosting provider, but that's not common.

The bigger thing though is less about the data and more about your listeners. If you move to another podcast host, it's obviously important that your existing listeners move with you, and every public podcast host I'm aware of will happily redirect your feeds (as mentioned in the article)

With Apple you have to ask people to move, and asking people to take an action is necessarily going to involve a lot of churn and confusion.