Serverless first is a great way to start building your business. As long as you don’t have strict latency requirements. You focus on your business, while the in

Serverless first is a great way to start building your business. As long as you don’t have strict latency requirements. You focus on your business, while the infrastructure requirements are handled for you. The point of engineering is to deliver the best solution and the right cost. Cost needs to be evaluated on multiple dimensions - actual dollars, time required to build, time required to maintain. Nothing stops you from using Postgres with Lambda. AWS has done a bunch of work to make this possible. I would recommend, creating the correct layer of separation in your code, so that when the times comes to migrate from Lambda or other serverless functions to Fargate, cloudrun, or even containers run on VMs managed by K8S, you have to make minimal changes to get up and running.