I wish you luck on your journey with this. We were in the similar space as a YC S20 company - trying to create a Heroku-like experience on AWS. There's been plenty other attempts as well.[1]
After working in this space for a couple years, I realized that unfortunately the market just doesn't exist. Small enough teams will typically hack their way through building an MVP and early versions. They don't need/want the complexity of kubernetes/terraform, most literally run their MVP on a couple of instances. On the other side, once you get big enough, you hire dedicated people to start solving these problems. The middle market in between the two is very small and you most likely will be beat by the services already built into AWS such as Amplify.
After working in this space for a couple years, I realized that unfortunately the market just doesn't exist. Small enough teams will typically hack their way through building an MVP and early versions. They don't need/want the complexity of kubernetes/terraform, most literally run their MVP on a couple of instances. On the other side, once you get big enough, you hire dedicated people to start solving these problems. The middle market in between the two is very small and you most likely will be beat by the services already built into AWS such as Amplify.
[1] https://github.com/debarshibasak/awesome-paas