<podcast:contentLink>
The contentLink
tag allows podcasters to provide links to external platforms where their content can be consumed. As a child of the channel
tag, this allows podcasters to verify their presence on various platforms via their feed. As a child of the item
tag, this allows podcasters to link to that episode on alternate platforms. As a child of the liveItem
tag, this allows podcasters to provide fallback destinations when an app doesn't fully support live streaming content.
Podcasts apps would have little incentive to link out to competing apps, but this would be very useful to universal link services attempting to locate podcasts on platforms without any lookup method.
<channel>
or <item>
or <podcast:liveItem>