Pretty easy for a customer to setup an SQS queue and a lambda for receiving them rather than rely on their infrastructure to do all the actual receiving. Way more reliable than coupling your code directly to the callback.
This is precisely what we do where I work. We have a service which has just one responsibility - receive webhooks, do very basic validation that their legitimate, then ship the payload off to an SQS queue for processing. Doing it this way means that whatever’s going on in the service that wants the data, the webhooks get delivered, and we don’t have to worry about how 3rd party X have configured retries.
