I was recently reading Amazon's information about the AWS IoT Platform, and came across an interesting example use case:
Although they don't describe how exactly the road condition data is sensed, if the sensor can detect a wet road, why would Amazon suggest sending the data to the cloud? Wouldn't it be simpler just to directly process the sensor data on the vehicle and alert the driver, rather than sensing, sending data to the cloud, waiting for it to be processed, receiving data and then alerting the driver? I can't really see much of an advantage other than the possible analytics data you would gain.
Is Amazon's example use case only beneficial when you want to gain analytics data, or are there other reasons that they would suggest to use the cloud?
I suspect one of the reasons is simply to make people use the service they're trying to sell, but I'm interested in technical reasons, if there are any.