Article doesn't go far enough in my opinion. The biggest problem with notifications is not determining what qualifies, the biggest problem is each notification

Article doesn't go far enough in my opinion. The biggest problem with notifications is not determining what qualifies, the biggest problem is each notification alerter lives in a silo. I can answer a notification on my iPad and then have to dismiss it on my phone and/or my web browser. If we could funnel all of our notifications through a single service (of which I'd like there to be several competitors) we could solve both problems. Dismiss your notification everywhere and have control to set rules (or importance levels) for messages.