I've built a serverless webhook dispatcher at my previous job and you can actually cover most of the scalability and resiliency requirements with a few AWS serv

I've built a serverless webhook dispatcher at my previous job and you can actually cover most of the scalability and resiliency requirements with a few AWS services. I think what is hard to build and the core value that your service provides is the management, governance, and monitoring around it. I would focus there as the main selling point. Kudos for launching it and good luck.