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Glossary

What is Industry 4.0?

The Fourth Industrial Revolution — smart, connected, autonomous manufacturing.

Industry 4.0 is the ongoing fourth industrial revolution, defined by the convergence of cyber-physical systems, the Industrial IoT (IIoT), Artificial Intelligence, cloud computing, and big data analytics into manufacturing operations — enabling factories to become self-monitoring, self-optimising, and increasingly autonomous.

The Four Industrial Revolutions

RevolutionEraDefining TechnologyKey Change
Industry 1.01760s–1840sSteam engine, mechanisationMuscle power → machine power
Industry 2.01870s–1960sElectricity, assembly lineCraft → mass production
Industry 3.01970s–2000sComputers, PLCs, automationManual → automated machines
Industry 4.02011–presentIIoT, AI, cyber-physical systemsAutomated → autonomous & intelligent

The 9 Pillars of Industry 4.0

Identified by the Boston Consulting Group (BCG), the 9 technology pillars of Industry 4.0 are:

01Industrial IoT (IIoT)
02Big Data & Analytics
03Autonomous Robots & Cobots
04Simulation & Digital Twins
05Horizontal & Vertical Integration
06Cloud Computing
07Additive Manufacturing (3D Printing)
08Augmented Reality (AR)
09Cybersecurity

Industry 4.0 in the Factory: The Role of OPC UA and MES

At the shopfloor level, Industry 4.0 starts with connectivity. OPC UA (IEC 62541) is the standard communication protocol that connects PLCs, CNCs, robots, and sensors to higher-level systems — without proprietary middleware. It implements Pillar 5 (Horizontal & Vertical Integration) directly.

A Manufacturing Execution System (MES) sits at ISA-95 Level 3 — between the shopfloor (Level 1–2) and the enterprise ERP (Level 4–5). The MES executes Industry 4.0's Pillar 2 (Big Data Analytics) by calculating OEE, MTBF/MTTR, and quality trends from live OPC UA data.

On-Premise vs Cloud for Industry 4.0

While "cloud" is one of the 9 pillars, many manufacturers — especially in aerospace, defence, and pharmaceutical sectors — require on-premise deployment due to data sovereignty, ITAR compliance, or network latency constraints for OT systems. A well-designed Industry 4.0 platform must support both deployment models.

Frequently Asked Questions

What is the difference between Industry 4.0 and IIoT?
IIoT (Industrial Internet of Things) is one pillar within Industry 4.0 — the network of connected industrial sensors, machines, and devices. Industry 4.0 is the broader vision that encompasses IIoT plus AI, digital twins, cloud, cobots, AR, and the rest. IIoT is the nervous system; Industry 4.0 is the whole body.
Is Industry 4.0 the same as digital transformation?
Not exactly. Digital transformation is a business strategy that can apply to any sector. Industry 4.0 is the manufacturing-specific expression of digital transformation — focused on smart factories, OT/IT convergence, and autonomous production systems.
What is Industry 5.0?
Industry 5.0, promoted by the European Commission, extends Industry 4.0 by placing human collaboration at the centre. It emphasises human-robot collaboration (cobots), sustainability, and resilience — rather than pure automation efficiency. Industry 5.0 does not replace 4.0; it builds on it.

Your Industry 4.0 Platform, On-Premise

Shopfloor Copilot connects OPC UA machines to a full MES: real-time OEE, predictive maintenance, AI-powered anomaly detection, shift collaboration — all deployable on your own infrastructure.

Explore OPC UA Integration →