It's kind of cool they sell AWS IoT buttons, guess they liked what one guy was doing with the Amazon Dash devices to keep track of their baby's sleep cycle so he could try to sync naps with theirs. Of course someone else mentioned it's a bit pricey and no ability to replace the battery?... What? If I had to guess the Dash button is likely more reliable and not tied to AWS (you kinda hook it up to a Pi Router and MITM the requests instead - or similar).

I much rather some company would make a nice kit for the Raspberry Pi Zero W to make your own IoT button (with a nice case), at least then you know what you're getting and you feel like you have total control over it.