I spent half a day configuring all the Zorro environment on my AWS EC2 free instance (1G RAM) to figure that is not possible to work on it because the AWS machine's performances are too slow. See image below.
Although see below it's stated that 2 MT4 instances of Zorro should work on AWS EC2 Micro Instance.
I believe 1GB of RAM and the CPU provided by Amazon are very limited even for running one Chrome browser session.
So I guess I need to buy a VPS somewhere else.
If you run Zorro in a cloud please feel free to share your choice.