[detaro]

The entire guide seems mostly consumer-centric: What do they as the one being called want, sender-side concerns are missing entirely.

[giuliano84]

Yes but that's why you build webhook for, to let people consume your content. I think DX is critical today and big companies can afford to do the heavy-lifting. As I mentioned in the Subscription Expiration paragraph I totally get Microsoft's reason to put a 72hrs expire date on subscriptions but it adds some friction on the consumer side.

[qyv]

Consumer convenience cannot be made at the expense of security measures and abuse mitigation, see: IoT.