The Internet of Things (IoT) is a network of interconnected devices, sensors, machines, and systems that collect and exchange data with minimal human intervention.These devices โ ranging from household appliances…
The Internet of Things (IoT) is a network of interconnected devices, sensors, machines, and systems that collect and exchange data with minimal human intervention. These devices โ ranging from household appliances to industrial machines โ communicate over the internet to perform intelligent, automated functions.
IoT = Sensors + Connectivity + Data + Intelligence
Edge Computing
Edge Computing is a distributed computing paradigm that brings data processing, storage, and analytics closer to the source of data generation โ i.e., at the โedgeโ of the network rather than in centralized cloud servers.
Goal: Reduce latency, bandwidth usage, and enhance real-time decision-making.
Relationship Between IoT and Edge Computing
IoT generates massive real-time data.
Edge Computing processes that data locally, before sending only essential insights to the cloud.
Together, they enable fast, secure, and intelligent systems.
Evolution of Computing Architectures
Generation
Computing Model
Description
Centralized
Mainframe Computing
All processing in one large system.
Decentralized
ClientโServer
Distributed nodes connected to servers.
Cloud Computing
Centralized cloud data centers
Scalable storage and compute.
Edge/Fog Computing
Distributed near-data processing
Real-time analytics and IoT integration.
Edge computing is often supported by fog computing, a layer between edge and cloud that coordinates multiple edge nodes.
loT Ecosystem Overview
An IoT ecosystem includes all technologies, components, and stakeholders that work together to collect, transmit, process, and use IoT data.
Core Layers of IoT Ecosystem
Layer
Function
Technologies
1. Perception Layer
Sensing and data collection
Sensors, RFID, cameras, actuators
2. Network Layer
Data transmission
Wi-Fi, 5G, LPWAN, Zigbee, NB-IoT
3. Edge Layer
Local processing and filtering
Edge gateways, microservers
4. Cloud/Platform Layer
Centralized processing, analytics, and storage
AWS IoT, Azure IoT, Google Cloud IoT
5. Application Layer
End-user services and visualization
Smart home apps, industrial dashboards
Edge Computing Architecture
Typical Edge Architecture
End Devices (Sensors/Actuators): Measure environmental parameters (temperature, motion, pressure, etc.).
Edge Nodes / Gateways: Perform preprocessing, filtering, or AI inference close to devices.
Fog Layer (Optional): Aggregates multiple edge devices, performs local coordination.
Cloud Data Center: Conducts large-scale analytics, long-term storage, and global optimization.
Control and Management Layer: Orchestrates devices, ensures security, and manages workloads.
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