Edge computing brings memory and computing power closer to the location where it is needed.
Alex Reznik, Chair of the ETSI MEC ISG standards committee, has a broad definition, "anything that’s not a traditional data center could be the ‘edge’ to somebody." Other definitions are more limited. The State of the Edge report concentrates on servers "in close proximity to the last mile network." Philip Laidler believes "edge compute includes workloads running on customer premises." Some call this the customer, enterprise or device edge. Another, more inclusive way to define "edge computing" is to include any type of computer program delivers low latency nearer to the requests.
It is a distributed computing paradigm in which computation is largely or completely performed on distributed device nodes. Edge computing pushes applications, data and computing power (services) away from centralized points to locations closer to the user.
The target of edge computing is any application or general functionality needing to be closer to the source of the action where distributed systems technology interacts with the physical world. Edge computing does not need contact with any centralized cloud, although it may interact with one.
Edge application services reduce the volumes of data that must be moved, the consequent traffic, and the distance the data must travel. That provides lower latency and reduces transmission costs. Computation offloading for real-time applications, such as facial recognition, has been demonstrated in early testing.
In one vision of this architecture, specifically for Internet of things (IoT) devices, data comes in from the physical world via various sensors, and actions are taken to change physical state via various forms of output and actuators; by performing analytics and knowledge generation at the edge, communications bandwidth between systems under control and the central data center is reduced. Edge computing takes advantage of proximity to the physical items of interest and also exploits the relationships those items may have to each other.
- Content delivery network
- Edge device
- Fat client
- Mobile edge computing
- Utility computing
- Fog computing
- Serverless architecture
- Ubiquitous computing
- Heterogeneous computing
- Amorphous computing
- Green computing
- Intelligent transportation system
- "ETSI - ETSI Blog - What is Edge?". www.etsi.org. Retrieved 2019-02-19.
- "DocSend - Simple, intelligent, modern content sending". DocSend. Retrieved 2019-02-19.
- "10 things you should know about telco edge computing". www.linkedin.com. Retrieved 2019-02-19.