Table 1 Comparative analysis fog orchestrator architectures

Scheduling

Planner mechanisms schedule processes and their locations

Service management and catalog done by the Orchestrator

Planning, deployment and management carried out by the MEO

LCM implements scheduling strategies, services deployed using a SDN approach

Path Computation

N/A

N/A

Indicated as needed but no further details provided

N/A

Discovery and Allocation

Service discovery mechanisms at the Orchestrator to enable lookup

Handled by infrastructure manager

Indicated as needed but no further details provided

Orchestrate physical resources into virtual ones, carried out by the Conductor

Interoperability

N/A

M2M interoperability through standard communication

N/A

N/A

Latency

Service placement mechanisms at the Orchestrator to minimize latency

N/A

N/A

Provide local servers at the Fog to minimize latency

Resilience

Survivability mechanisms at the Resource Manager

N/A

N/A

Use of resilience metrics for scheduling purposes

Prediction and Optimization

Global mechanisms to improve performance of the system

Set of policies for virtual environments

Indicated as needed but no further details provided

State of the network used for optimization mechanisms

Security and Privacy

Security manager provides different privacy mechanisms

Data security mechanisms as dependencies of the Orchestrator

N/A

N/A

Authentication, Access, and Account

Authentication mechanisms supported by its security manager

N/A

Indicated as needed but no further details provided

N/A