What is the best way to deploy and scale with WordPress?

I was wondering on which may be the best practices for deploying and scaling with WordPress.

For example, I want to create a small company website that will eventually get random traffic from 1000 to 2000 visitors per hour or 10-50 per second.

Overall I want to be ready to deploy an additional instance in some CloudProvider/s and LoadBalance the traffic while the back-end(wp-admin) area is working normally without any disruption because there will be several users working there.

WP may not be the best solution for my case but I just need to find an optimal one with which I can be ready.

If possible please tell me how would you start and what may be the best option.