AWS revenue Q3 2017 - $4.58B up 42%, operating income $1.17B up 38%

http://phx.corporate-ir.net/phoenix.zhtml?c=97664&p=irol-presentations
AWS now has quarterly revenue of $4.584B/quarter, extrapolating this to four quarters equates to $18.336B/year.

Amazon overall Revenue and Income shows that if not for its AWS cloud business, Amazon would be posting big losses: