I want mount one server for php application but I don't know what is best:
- more processor
or
- more memory

t2.small by Amazon EC2 will be nice for beginning? 100 user online executing 2, 3 queries per request

Hey Wtabata,

It's a balance of processor and memory that gives the best performance. If you're not sure you have a couple of options.

You can start small and build up. Nobody penalizes you for getting the next bigger package, though they will penalize you for signing a contract for a larger package and then downgrading.

Performance test your application on a virtual test bed, the best combination of compute and memory will remain basically the same as you begin to scale up (though as you get to 8+ processors on an instance or more than one instance operating behind a load balancer, you'll see the ratio change)