So, I was part of an e-commerce based team for a short period of time wherein I set up the webhook endpoint. We exposed a secure STPA endpoint in our backend and we rate limited the endpoint via the middleware to avoid the abuse and we added error handling scenarios like invalid JSON or bad payloads like 400 bad requests or if there is a temporary 500 internal server error from database connection part or network failures. And we use asynchronous programming to give real time responses.