/challenges-projects/design-challenges/texas-instruments-safe-sound-wearables-design-challenge/b/blog/posts/safe-sound--flood-early-warning-alarm-pack-9-pubnub-on-website-for-flood-alarm1. PubNub.com has provided great tools for publish channel over PubNub service over internet, the website can response to the request by subscribe the channel, only subscribe key is needed for this service. Of course, this can be done by AWS IoT serven-USTelligent Community 12