I think there's good value to be had from articles like these, depending on where you're starting and how you approach this kind of work. On the requirements s

I think there's good value to be had from articles like these, depending on where you're starting and how you approach this kind of work. On the requirements side, one thing I would like to see though is an approach for determining how your applications will scale on cloud infra. For instance on AWS, which RDS and EC2 instances will suffice out of the gate, and at what IOPS/bandwidth? And when will I need to scale them? The metric is simply how many users can I support with acceptable response times on a given configuration? Sure, we know that's highly dependent on the applications, stack, etc. But I've often thought there should be some rubric for approaching this that doesn't require going heavy on performance analyzers, load balance testing, etc, which frequently seem like overkill out of the gate when you're making your initial config selections.