Migrate a podcast to a new hosting provider without losing subscribers or ratings

Steps

1. Set up the new hosting provider so show title, description, cover art, audio files, and season/episode numbers carry over identically.
2. Verify every episode's GUID (or, if the host doesn't use GUIDs, its enclosure URL) stays byte-for-byte identical between old and new feeds — this is what prevents duplicate episodes in podcast apps.
3. On the old host, add the <itunes:new-feed-url> tag pointing to the new feed's URL, if the old hosting provider supports it.
4. On the old host, configure the old feed URL to issue an HTTP 301 permanent redirect to the new feed URL — Apple documents this as the primary mechanism most hosting providers use to migrate all followers, including non-Apple ones.
5. Leave the old feed (redirect and/or new-feed-url tag) in place rather than deleting it immediately, and diff old vs. new feed with an RSS viewer/validator for metadata consistency.
6. If you no longer have access to the old feed/host at all, manually update the RSS feed URL for the show inside Apple Podcasts Connect as a fallback.