I like that you can easily use it with all existing technologies in AWS (Kinesis Firehose) as well other services such us Lambda functions etc..
Also easy integration of third party APIs is very good! At this moment there are not many products out their which allows me an ease-of deployment into my own environment without having too much dependencies from 3rd parties/cloud providers so far i haven't found anything else yet but pulumu seems pretty close :) You have got everything needed already included within your product itself if need arise later down time line - eases things up greatly when starting new projects where we don’t want external dependency points anymore since most likely our customers will be able utilize these types solutions themselves anyways by now anyway ;) If anyone wants some extra power then look no further than Amazon EC2 instances because they come preinstalled ready made environments just waiting around to do what ever task.