| | Key features | Edge cloud computing | Conventional cloud | | Fog | Mobile edge computing (MEC) | Cloudlets |
| | Proposed/introduced by | Cisco in Aug. 2012 | ETSI in Sep. 2014 | CMU team in Oct. 2013 | Amazon |
| | Promoted by | Cisco, Princeton,
Microsoft, Intel, Dell | ETSI ISG MEC:
Nokia, Huawei, IBM, Intel, NTT DoCoMo, Vodafone | Prof. Mahadev at
CMU, later supported by Intel, Huawei, Vodafone, Deutsche Telekom, Nokia and NTT | Microsoft,
Google, Amazon |
| | Industry organizations | OpenFog Consortium | ETSI MEC ISG | Open Edge Computing initiative | Open Cloud Consortium |
| | Inspiration | IoT, WSN, VANETs | MEC as stepping
stone towards 5G mobile networks | Distributed cloud,
cognitive and tactical network | Remote storage, computing, and applications |
| | Architecture framework | Yes | Yes | Not necessary, it can be an enabler for fog and MEC | Yes |
| | Geo-distributed | Yes | Yes | Yes | No |
| | Network Architecture | Decentralized | Decentralized | Decentralized | Centralized |
| | Low latency/jitter | Yes | Yes | Yes | No |
| Geo-mobility support for applications
on device | Yes | Yes | Not inherent, but
can be added | No |
| | Near real-time interaction | Yes | Partial | Partial | No |
| Emphasis on online data
analytics & interaction with cloud | Yes | Yes | N/A | Yes |
| | Edge server location | Flexible b/w end device and cloud | Collocated with BS | Network Edge | N/A |
| | Dynamic broadcasting range depending on the message type | Yes | Partial, not dynamic | Yes | N/A |
| | Location awareness | Yes | Yes | Yes | No |
| | Mobility support | Yes | Yes | N/A | Limited |
| | Channel Bandwidth | 75 MHz for 802.11p | 20 MHz for LTE | 20 MHz for 802.11n | - - - |
| | Capacity | 6 Mbps for 802.11p | 150 Mbps downlink & 50 Mbps uplink for LTE | 50 Mbps for 802.11n | - - - |
| | Scalability | High | High | High | Average |
| | Run experimental testbed | Yes, at Princeton | No | Yes, at CMU | Yes |
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