These end points allow you to retrieve aggregated data from the warehouse. Results are provided by analytics back-end and as such very closely match the result sets we provide to end users through our portal and newsletters. Hence these end points can be most readily used to get such data sets integrated to other customer systems also. You'll minimally need to provide dimensions you want to group data over and metrics you'd like to see. You can also additionally filter results by time, or by dimension values and sort your result set by given fields.