We calculate a host as a physical machine or VM that is sending data to us for 720 hours in a month. That means, if you autoscale and say if you run 2 physical hosts for the first 15 days of the month and then no hosts are running for the second 15 days of the month, then you would have connected only 720 hours and so only one host will be calculated.

Dockers are not considered as host. For e.g. if one physical host is running 3 docker, then it is still considered as a single host. If the dockers are running on separate individual (physical or VM) hosts, then they are considered as separate hosts.

For the physical hosts, a host (1x host) is considered as a system with upto 10 cores. So if a physical host has 8 cores, it is calculated in the pricing as 1x host, if a physical host (not docker) has 16 cores, then it is calculated as 2x host. The reason we do this is, more powerful host systems are used for processing more data and this in turn sends us millions of requests for storage and processing.