Layer 6 (Application)
The sixth layer is responsible to process data in order to ensure that it is accessible for everyone.
It is associated with both the physical and software layer. It is used for data interpretation to
create reports. Business intelligence tools are also used in this layer.
Layer 7 (Collaboration and Processes)
The seventh layer oers action or response that can help against the provided data. For example,
this action can be an electromechanical device’s actuation after a trigger from the controller.
Why should one go about selecting Seven-Layer architecture when Four-Layer
architecture may be suffice? Can you think of at least three reasons on selecting
Seven-Layer architecture over four-layer architecture?
Flash Question
Fog Computing
To understand the role of a fog computing architecture in IoT, we have to first understand the
IoT dilemma so we can learn why fog computing is necessary for IoT.
CLOUD
FOG COMPUTING
FOG FOG FOG
Dilemma
Internet of Things envisions connectivity for workplaces and homes via various internet-
connected devices. However, as the reliance on these devices grows and their applications
Chapter 4 IoT Architecture Choices 85
Internet_of_Things_CH04_pp081-104.indd 85 9/3/2019 10:13:30 AM
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