Table 1 Comparison of cloudlets, fog and MEC approaches [35]

Reduce Latency

Y

Y

Y

Reduce Jitter

Y

Y

Y

Multi-Tenancy

Y

Y

Y

With virtual IaaS platform?

Y

Y

Y

Co-Location

Y

Y

Y

Geographical Distributed

Y

Y

Y

Mobility Support

Y

Y

Y

Inspired from

Tactile Internet

IoT

Mobile World

Extended from Cloud

Y

Y

May or may not

Mostly used with wireless access

May or may not

Y

Y

Focus on-line analytics

May or may not

N

Y

Located between DC and device

Y but can directly run on a device

Y

Y

Improve User Experience

Y

Y

Y

N-tier

N = 3

N = 3 or more

N = 2 or 3