#IIoTApr 30, 2026 · 7 min read

IIoT: Industry 4.0 was the rehearsal. 5.0 is the show.

A decade of "smart factory" pitches. Most plants still aren't. The next decade is when industrial IoT actually pays for itself.

IIoT: Industry 4.0 was the rehearsal. 5.0 is the show.
01

The hype cycle hangover

Industry 4.0 has been talked about for over a decade. Most plants put up dashboards, called it "smart", and went back to running on tribal knowledge. The dashboards were measured in clicks per week.

The hard work — instrumenting machines, building a unified namespace, integrating MES with ERP — was deferred.

02

What changed

The economics finally tipped. Sensors are cheap. OPC UA and MQTT (Sparkplug B) are universal. Edge compute is a $200 box. Cloud storage is rounding error. The cost of NOT instrumenting now exceeds the cost of doing it properly.

Predictive maintenance pays for itself in months. OEE uplifts of 25-50% are routine in plants that take it seriously. Energy savings alone often cover the project.

03

Industry 5.0 — the human at the centre

Industry 5.0 isn't a replacement for 4.0 — it's 4.0 plus the human. Cobots, wearables, augmented operators, AI as assistant rather than replacement. The plants that survive the next decade are the ones that listen to themselves AND their people.

Carbon accounting, digital twins, autonomous mobile robots, 5G factories — all of it lands in the same period. The window to start is now.

Written by the team at Karvitech Software Solutions. We build software for shops, clinics, factories, and agencies — across web, mobile, cloud, and the floor.