The rapid growth in use of Cloud has driven the development of large data centres in suburban areas of Japan. Cloud is highly convenient, but its measurable latency is a drawback. Cloud-based data centres are located in suburban areas due to the difficulty in securing land, and the long distance from the user‘s location results in the latency issue.
An edge data centre is a data centre that locates close to the users and serves a small, limited area. Whereas the cloud has enormous processing capacity and covers a wide area from a long distance, an edge data centre accomplishes low latency while processing capacity is relatively small.
The tolerable level of latency varies according to the application. Therefore, combining cloud and edge makes it possible to benefit from the cloud's centralised processing while also overcoming the drawback of the cloud, namely its significant latency.
In future, new technologies such as self-driving vehicles are likely to lead to an increase in the applications where latency cannot be tolerated. In the case of a car travelling at 60km/h, a response delay of 0.1 seconds equates to forward movement of 1.7 metres. Consequently, the demand for edge data centres is likely to increase.