For me its Java with Spring or maybe something like Micronaut. Its what I'm most familiar with. Plus the massive Java ecosystem means I can probably find a lib

For me its Java with Spring or maybe something like Micronaut. Its what I'm most familiar with. Plus the massive Java ecosystem means I can probably find a library to do just about anything. Database would be MySQL or Postgres. The application containers would run on something like Google Cloud Run, other serverless options are available.