Welcome to the Community!
Have you installed the Amazon Echo control binding? Release Candidate and Support: Amazon Echo Control Binding
You will not be able to use IFTTT with openhab cloud due to server overload. If IFTTT is needed you will need to run it on your own cloud server.
Yes this works good with OH as I use it more several items/devices.
This is now an old version and you may want to upgrade to the latest OH 2.5 release.