Can CUBA support 20 users concurrently in use?

The following server configuration can support 20 users concurrently in use.

OS : Windows Server 2008 R2 Enterprise
DB : MySQL 5.7
Memory : 16G

Assuming that one web session will eat 20MB max and having -Xmx10GB, such server should be OK for up to 500 concurrent users.

In general, of course the memory and CPU consumption depend on what your application does, on the number of concurrent users and background tasks.

Thank you for your reply.