From this blog post...

I have been getting warnings on all my Node.js code that uses AWS api's that come September they're all going to break. I'm working on my mail list stuff this week, trying to get the HTML to work for a lot more people than it was working for, and it's a very depressing process, but I did the work, but I don't plan on looking at this again for another five years. But lurking in the background is the threat by AWS, and I consider a threat, that if I don't rewrite my code in a non-insignificant way, before September, it's all going to just stop working. I took the time the other day to actually look at what's involved, and I see that they changed their API to use promises. Great. Another stupid exercise in fealty. I think they're going to regret doing this, because I don't have the time to go so deep in the bowels of pretty much my entire codebase, and potentially break everything, and then have to debug it, when I have so many other things to do, and I'm getting older, and I just don't have the energy to devote to make-work for Amazon. The arrogance of it, and how diseconomic it is. They never promised they wouldn't break all their developers, but geez who would've thought they wanted to? I don't think they're actually going to be able to flip the switch. I'd love to hear what other developers think.