Stop solving problems you don't have. You have no users, you don't need to support a million of them. You make no money, you don't need to burn through all your cloud credits so fast. Just chill, start with a couple Linodes, Droplets, or Lightsail instances and see how far you can get with a simple app, api, load balancer, and a database. You'd be shocked how far that stretches when you're talking about servicing real paying customers.
Stop solving problems you don't have. You have no users, you don't need to support a million of them. You make no money, you don't need to burn through all your cloud credits so fast. Just chill, start with a couple Linodes, Droplets, or Lightsail instances and see how far you can get with a simple app, api, load balancer, and a database. You'd be shocked how far that stretches when you're talking about servicing real paying customers.