Fog Computing: Bringing Cloud Capabilities Down to Earth
When we think of “cloud” we think of a vast collection of compute, network, and storage capabilities that resides somewhere high above us—a massive repository of functionality that can be accessed from anywhere and any device with enough bandwidth to handle the data flow. With practically unlimited power and scalability, cloud technology has been a key enabler of the Internet. But the Internet of Things (IoT) demands something more. IoT is a broad collection of sensors, cameras, smartphones, computers, and machines—all connected to and communicating with applications, websites, social media, and other devices. To maximize value, much of the data generated by these “things” must be processed and analyzed in real time. For example, sensors and cameras in and around a large retail store may continuously collect data about customer volume and traffic flow. The store can derive some value from all this data by sending it back to the cloud to analyze long-term trends. But the value is multiplied if the system can process the data locally, in real time, and then act on it immediately by sending more cashiers to the check-out line just before a surge in customer traffic.
For more please follow the link