Cloud Hosted Router (CHR) is a RouterOS version meant for running as a virtual machine. It supports x86 64-bit architecture and can be used on most of popular hypervisors such as VMWare, Hyper-V, VirtualBox, KVM and others. CHR has full RouterOS features enabled by default but has a different licensing model than other RouterOS versions.
Difference between CHR Versions
License P1 - 1Gbps upload speed limit per interface
License P10 - 10Gbps upload speed limit per interface
License P-Unlimited - Unlimited speed