You should avoid most of their offerings because of vendor lock-in. My two cents is to build something that could be deployed anywhere else also. Maybe you ar

You should avoid most of their offerings because of vendor lock-in. My two cents is to build something that could be deployed anywhere else also. Maybe you are fine staying on AWS forever but maybe you could save a lot of money by migrating somewhere else later. AWS fees could cost more than your startup makes, depending on how you build your service, who knows what the future brings. So it's better to make your deployment flexible enough that you can ditch AWS and migrate to dedicated servers easily. It's something to think about from the start.