Wow, sorry, but that’s just a very inaccurate answer. Not to mention there’s no such thing as “SmartEdge.” That looks like a canned script, where they just went through and changed the brand-name to smartthings. 
The short answer is that smartthings is in the middle of a major transition from one architecture to another.
There used to be a smartthings channel on Ifttt for the old architecture, but last time I checked no longer worked for new customers. It has been renamed to “SmartThings (legacy).”
IFTTT (not SmartThings) has been working on a new channel that will work with the new architecture. It was initially released in January, but had some glitches so they pulled it again. I’m not sure if it’s available yet or not, but see the following thread: