If you set yourself a goal for energy usage in your house, if you have to look at a graph on your phone, you probably won't change your behavior. But if you have a clock on the wall that changes color from green to red if you're using more energy than you've planned, then that actually can change your behavior. There are a lot of things to be done in that world that actually have an impact on our daily lives.
Werner VogelsA service is said to be scalable if when we increase the resources in a system, it results in increased performance in a manner proportional to resources added.
Werner Vogels