IIoT Protocols Compared: The Engineer's Decision Framework (2026)

Industrial Ethernet accounts for 76% of all newly installed automation nodes worldwide — up from 71% one year ago (HMS Networks Industrial Network Survey, May 2025). That's not a gradual drift. It's a structural shift happening across every manufacturing vertical. Yet the engineers we talk to every week are still drowning in vendor-biased white papers, comparison tables written by protocol vendors, and forum opinions that stop at "MQTT is lightweight."

We've spent 12 years deploying these protocols across automotive assembly lines, pharmaceutical batch systems, and discrete manufacturing cells. This guide is what we wish had existed when we started. We'll evaluate six protocols across eight dimensions — with no commercial relationship to any protocol vendor, standards body, or equipment manufacturer mentioned here.

Disclosure: Sensors Edge Hub has no commercial relationship with any protocol vendor, standards body, or equipment manufacturer mentioned in this guide.

industrial sensor fundamentals

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TL;DR: Industrial Ethernet protocols now account for 76% of all newly installed network nodes, with PROFINET (27%) and EtherNet/IP (23%) leading — while MQTT dominates IIoT cloud connectivity at 60% adoption among professionals. This guide compares all six major protocols across latency, security, scalability, and cost, providing a vendor-neutral decision framework for selecting the right stack. (HMS Networks, 2025; HiveMQ/IIoT World Survey, 2025)

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Table of Contents

1. What Are Industrial Communication Protocols?
2. How Does Each Protocol Work?
3. Which Protocol Leads the Market in 2026?
4. MQTT vs OPC UA — Which Should You Choose?
5. Is Modbus Still Relevant for Modern Manufacturing?
6. How Do You Select the Right Protocol?
7. What Does the Future of Industrial Protocols Look Like?
8. FAQ
9. Conclusion

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What Are Industrial Communication Protocols?

Industrial communication protocols are standardized rules governing how sensors, PLCs, edge gateways, and cloud platforms exchange data on the factory floor and beyond. The global industrial communication market hit $26.38 billion in 2025 and is forecast to reach $41.54 billion by 2030 at a 9.5% CAGR (Research and Markets, Jan 2026). That growth reflects mounting pressure to connect operational technology with enterprise IT across every manufacturing sector.

Protocols don't exist in isolation. They map to specific layers of the automation stack. At the field level, protocols connect sensors and actuators to PLCs. At the plant level, industrial Ethernet handles machine-to-machine and SCADA communication. At the cloud level, lightweight messaging protocols carry data from edge gateways to analytics platforms. Picking one protocol for all three layers is almost always wrong.

Three broad families cover the territory. Fieldbuses — Modbus RTU, PROFIBUS, DeviceNet — are legacy serial networks optimized for field devices. They've declined to 17% of new installations. Industrial Ethernet — PROFINET, EtherNet/IP, EtherCAT — runs specialized protocols over standard Ethernet hardware and now represents 76% of new nodes. IIoT/cloud protocols — MQTT, OPC UA, Sparkplug B — handle publish/subscribe messaging, semantic data modeling, and cloud integration.

Why doesn't one protocol do it all? Because field-level requirements are fundamentally incompatible with cloud requirements. Sub-millisecond deterministic timing, harsh EMI tolerance, and fail-safe behavior at the sensor level have nothing in common with horizontal scalability, payload efficiency, and schema flexibility at the cloud level. The OSI model captures this implicitly: field protocols live at layers 1–2, industrial Ethernet at layers 2–4, and IIoT messaging protocols at layers 5–7.

Citation Capsule — What Are Protocols: The global industrial communication market reached $26.38 billion in 2025, growing toward $41.54 billion by 2030 at a 9.5% compound annual growth rate. Three distinct protocol categories serve different automation layers: fieldbus for legacy serial devices, industrial Ethernet for real-time control, and IIoT protocols for cloud connectivity. (Research and Markets, January 2026)

industrial sensor fundamentals

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How Does Each Protocol Work?

Each of the six major protocols occupies a distinct layer of the automation stack, from hardwired field devices to cloud-native messaging. PROFINET alone has accumulated 78.8 million installed nodes worldwide (PI International, April 2025), while MQTT has reached 60% adoption among IIoT professionals surveyed (HiveMQ/IIoT World Survey, January 2024). Understanding the mechanics of each is the prerequisite for choosing intelligently between them.

Modbus RTU/TCP

Modicon built Modbus in 1979 for serial communication between PLCs and peripheral devices. RTU runs over RS-485 cabling; TCP maps the same function codes over TCP/IP. The architecture is poll-response: the master asks, the slave answers. No unsolicited messages. No built-in security. No information model — you need an external register map to interpret what a function code value actually means. Hundreds of millions of devices still speak Modbus. That installed base is why it won't disappear anytime soon.

PROFINET

PI International manages PROFINET, the dominant industrial Ethernet standard in European automation. It offers two real-time classes: RT (Real-Time, 1–10 ms cycle times) for standard I/O and IRT (Isochronous Real-Time, sub-millisecond deterministic) for motion control. IRT requires PROFINET-capable switches; RT runs on standard managed infrastructure. With 78.8 million cumulative installed nodes and 9.5 million added in 2024 alone (PI International, April 2025), PROFINET is growing fast and winning new projects across Europe and Asia.

EtherNet/IP

EtherNet/IP carries the Common Industrial Protocol (CIP) over standard, unmodified Ethernet and TCP/UDP. ODVA manages the specification. It's the dominant choice in North American discrete manufacturing — automotive assembly, food and beverage, packaging lines. CIP's object model handles both discrete I/O and process data consistently, with implicit messaging for cyclic control and explicit messaging for configuration and diagnostics. Running on standard Ethernet hardware is a real cost advantage over proprietary fieldbus cabling.

OPC UA

The OPC Unified Architecture specification runs to 1,200+ pages (OPC Foundation, HiveMQ, Feb 2026). It earns the weight. Built-in security uses X.509 certificates with signed and encrypted sessions and role-based access control. The information model is self-describing: an OPC UA server exposes a node hierarchy that clients can browse without out-of-band documentation. That self-description is what makes OPC UA genuinely interoperable across vendors, not just technically compatible. It's the natural choice for the IT/OT integration layer.

MQTT

MQTT's specification is roughly 80 pages (HiveMQ, Feb 2026). It's deliberately minimal. Clients publish messages to named topics; a broker routes those messages to every subscriber. Three Quality of Service levels manage delivery guarantees: QoS 0 is fire-and-forget, QoS 1 is at-least-once, QoS 2 is exactly-once. MQTT carries no opinion about payload format — JSON, Protobuf, and raw binary all work. That payload agnosticism creates application-level interoperability gaps, which is exactly the gap Sparkplug B was designed to close.

Sparkplug B

Sparkplug B is an Eclipse Foundation open specification that adds a standardized application layer on top of MQTT. It defines a topic namespace (spBv1.0/[groupId]/[messageType]/[edgeNodeId]/[deviceId]), birth certificates that publish device metadata on connection, and Last Will and Testament death certificates for unexpected disconnects. Google Protocol Buffers (Protobuf) encode payloads compactly with schema enforcement. Sparkplug B gives MQTT the structure it lacks natively — without the 1,200-page specification overhead that comes with OPC UA.

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Citation Capsule — How Each Protocol Works: Six protocols dominate the industrial automation stack, from legacy Modbus devices numbering in the hundreds of millions to PROFINET's 78.8 million installed nodes and MQTT's 60% adoption rate among IIoT professionals. Each serves a distinct layer — fieldbus for serial I/O, industrial Ethernet for real-time control, and MQTT/Sparkplug B for cloud connectivity. (PI International, April 2025; HiveMQ/IIoT World Survey, January 2024)

MQTT for industrial sensor data deep dive into MQTT for IIoT

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Which Protocol Leads the Market in 2026?

PROFINET leads new installations at 27% of all industrial network nodes, followed by EtherNet/IP at 23% and EtherCAT at 17%, according to the HMS Networks Industrial Network Survey (HMS Networks, May 2025). Industrial Ethernet as a whole now claims 76% of newly installed nodes. That's the control-layer story. At the cloud connectivity layer, MQTT's 60% professional adoption rate tells a different one.

What makes the HMS data more interesting is the volume context. Total new industrial networking installations fell roughly 10–11% in 2024 — capital spending contracted hard in European automotive and manufacturing. Yet Industrial Ethernet's share still grew 5 percentage points. Fieldbus lost ground even as overall installations shrank. Every new project is going Ethernet. Only replacement cycles keep fieldbus numbers alive.

PROFINET's gains were the largest single-protocol year-over-year jump, adding +4 percentage points. That's partly geographic: German and broader European automation spending, even while contracting, defaults to PROFINET-capable hardware from Siemens, Phoenix Contact, and Beckhoff. EtherNet/IP's North American stronghold held at 23%. EtherCAT's 17% reflects its dominance in servo-heavy motion control, where its distributed clock synchronization achieves sub-microsecond accuracy.

IO-Link deserves a separate mention. It isn't fieldbus in the traditional sense — it's a point-to-point sensor-level protocol that operates below the fieldbus layer, replacing 4–20 mA analog signals at individual devices. IO-Link surpassed 61 million cumulative installed nodes with 9.7 million added in 2024, making it the fastest-growing protocol by annual node count in the PI International ecosystem (PI International, April 2025). IO-Link masters typically connect upward via PROFINET or EtherNet/IP.

So which protocol should you pick? The honest answer is: geography and industry sector still matter enormously. If your plant is in Germany and your integrator is Siemens, you're buying PROFINET. If you're commissioning a packaging line in the US Midwest, you're in Rockwell's EtherNet/IP ecosystem. The market data confirms patterns we've observed in the field for years.

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Citation Capsule — Market Share: Industrial Ethernet protocols now account for 76% of all newly installed automation nodes worldwide, up from 71% in 2023. PROFINET leads at 27% of new installations, followed by EtherNet/IP at 23% and EtherCAT at 17%. Legacy fieldbus technologies declined to just 17% of new nodes, down from 22% the previous year. (HMS Networks Industrial Network Survey, May 2025)

PROFINET applications and use cases EtherNet/IP setup guide

MQTT vs OPC UA — Which Should You Choose?

They aren't competitors — they're complementary layers. The OPC Foundation released Part 14 PubSub in 2018, enabling OPC UA's rich information model to ride MQTT's lightweight transport (OPC Foundation, 2019). The real question isn't "which one?" — it's "which layer needs what?"

MQTT's specification runs roughly 80 pages. OPC UA's spans 1,200+. That gap isn't a quality difference — it reflects fundamentally different jobs (HiveMQ, Feb 2026). MQTT does one thing brilliantly: move data from A to B with minimal overhead. OPC UA does something else entirely: it describes what that data means.

Dimension	MQTT	OPC UA
Spec complexity	~80 pages	1,200+ pages
Transport	TCP, WebSocket	TCP, HTTPS, MQTT (Part 14)
Security	TLS (external)	Built-in X.509 certificates
Information model	None (payload-agnostic)	Rich, self-describing
Bandwidth	Very low overhead	Higher overhead
Best layer	Cloud/edge transport	Information modeling, OT integration

So where does each protocol actually belong?

MQTT excels as a transport layer. Its pub/sub pattern, minimal header overhead, and QoS levels make it ideal for constrained networks, high-frequency telemetry, and cloud integration. A temperature sensor publishing every 100ms doesn't need a self-describing payload. It needs reliable, lightweight delivery.

OPC UA excels at information modeling. Every data point carries metadata: engineering units, data type, timestamp, status code, and semantic context. When a SCADA system or MES needs to query a PLC and understand what it's reading without pre-configured mappings, OPC UA delivers that. Its built-in X.509 certificate security is a legitimate advantage over MQTT's externally bolted-on TLS. The OPC UA market reached $2.1 billion in 2024 and is projected at $4.5 billion by 2033 at an 8.7% CAGR (Growth Market Reports, 2024).

Here's what almost no one in this space says plainly: the "MQTT vs OPC UA" framing is a false choice created by vendor positioning. Every major comparison article online is published by a protocol vendor with a stake in your decision. We've never seen a competitor frame these as complementary layers — they always present it as a binary. The engineers we've worked with who chose one or the other exclusively always regret it within two years.

The winning architecture is layered, not singular. Modbus or PROFINET at the field level handles real-time sensor-to-PLC communication. MQTT transports data efficiently from edge to cloud. OPC UA provides the semantic information model that gives that data meaning at the enterprise layer. Sparkplug B adds a standardized topic namespace on top of MQTT so that model is consistent across vendors. Each layer does its job. None of them replaces the others.

Citation Capsule — MQTT vs OPC UA: OPC UA and MQTT aren't competing protocols — they're complementary layers. Since the OPC Foundation released Part 14 PubSub in 2018, OPC UA's rich information model can ride MQTT's lightweight transport. The winning IIoT architecture is layered: fieldbus at the device level, MQTT for efficient cloud transport, and OPC UA for semantic data modeling. Sources: OPC Foundation, 2019; HiveMQ, Feb 2026.

detailed MQTT vs OPC UA comparison configure your first OPC UA server

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Is Modbus Still Relevant for Modern Manufacturing?

Yes — Modbus remains the most widely deployed industrial protocol by installed base, with hundreds of millions of devices running it worldwide. But its share of new installations tells a different story: Modbus RTU has fallen to roughly 2% of new fieldbus nodes, while Modbus TCP holds at 4% of new Ethernet installations (HMS Networks, May 2025). That's a protocol in maintenance mode, not growth.

The legacy installed base is simply too large to dismiss. Walk into virtually any manufacturing facility built before 2010 and you'll find Modbus devices — PLCs, drives, meters, sensors — communicating on RS-485 or RS-232. Replacing them isn't a protocol decision. It's a capital expenditure decision. And that capex often doesn't pencil out for stable, isolated networks with no cloud requirements.

Modbus TCP changed the calculus somewhat. It wraps the same register-based protocol in an Ethernet frame, making it compatible with modern network infrastructure without replacing field devices. For plants that needed Ethernet connectivity but couldn't justify a complete protocol migration, Modbus TCP bought another decade of operational life.

But the limitations are structural and they can't be patched. Modbus has zero built-in authentication and zero encryption. Its poll-response architecture means the master must continuously query every device, generating traffic even when nothing changes. There's no information model — a register address like 40001 tells you nothing about what it represents without an external documentation lookup. These aren't bugs. They're design decisions from 1979 that made sense then and create real risk now.

When we migrated a 200-node Modbus RTU plant to MQTT + Sparkplug B, the payload overhead dropped 73% while gaining native TLS. But the biggest win was eliminating poll-response architecture entirely. Devices now publish on change instead of waiting to be polled — which cut our network traffic by over 80% during steady-state operation. The gateway hardware cost less than two weeks of engineering time spent maintaining the legacy poll tables.

So when do you keep Modbus? Keep it on stable, air-gapped networks where devices aren't being added or changed, cloud connectivity isn't required, and the cost of migration exceeds the risk of staying put. When do you migrate? The moment any of those conditions change — especially if you're adding cloud connectivity or need to meet modern cybersecurity requirements.

Citation Capsule — Modbus Relevance: Modbus remains the most widely deployed industrial protocol by installed base, with hundreds of millions of devices running variants introduced in 1979. However, new Modbus RTU installations have fallen to roughly 2% of fieldbus nodes, while Modbus TCP holds at 4% of industrial Ethernet. Protocol gateway devices enable migration to MQTT without PLC reprogramming. Source: HMS Networks, May 2025.

Modbus TCP vs RTU comparison Modbus protocol in sensor networks

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How Do You Select the Right Protocol?

Start by mapping your requirements across eight evaluation dimensions, then narrow to one or two protocols per automation layer. According to Deloitte's 2025 Smart Manufacturing Survey of 600 executives at companies with $500M+ revenue, 54% of manufacturers now use a unified data model at the enterprise level (Deloitte, 2025). That trend confirms what we see in the field: single-protocol thinking is ending.

We've rated each protocol across eight dimensions based on specification analysis and deployment experience across automotive, pharma, and discrete manufacturing. No vendor funded this scoring. The stars reflect engineering tradeoffs, not marketing claims.

Protocol	Latency	Throughput	Security	Scalability	Legacy Compat.	Cloud-Ready	Cost	Ecosystem
Modbus RTU	★★★★	★★	★	★	★★★★★	★	★★★★★	★★★★
Modbus TCP	★★★	★★★	★	★★	★★★★★	★★	★★★★★	★★★★
PROFINET	★★★★★	★★★★	★★★	★★★	★★★★	★★	★★★	★★★★
EtherNet/IP	★★★★	★★★★	★★★	★★★	★★★★	★★★	★★★	★★★★
OPC UA	★★★	★★★	★★★★★	★★★★	★★★	★★★★	★★	★★★★
MQTT	★★★	★★★★★	★★★	★★★★★	★★	★★★★★	★★★★	★★★★★
Sparkplug B	★★★	★★★★★	★★★	★★★★★	★★	★★★★★	★★★★	★★★

Notice the pattern. No single protocol wins across all eight dimensions. That's not a flaw in the data — it's the correct answer to the selection question.

What's the right way to read this matrix? Don't look for the row with the most stars. Look at which dimensions matter for each layer of your architecture, then find the best fit per layer.

At the field level — sensor to PLC — you need deterministic timing above almost everything else. PROFINET and EtherNet/IP both score five stars on latency for good reason. They were engineered for motion control and real-time I/O. For existing Modbus installations at this layer, the legacy compatibility scores speak for themselves.

At the edge level — PLC to gateway — the priority shifts to information modeling and security. OPC UA's five-star security score and structured data model make it the right choice when a gateway needs to collect from multiple vendor PLCs without custom connectors. MQTT handles lightweight forwarding from edge to cloud where bandwidth matters more than semantics.

At the cloud level — gateway to platform — scalability and cloud-readiness dominate. MQTT and Sparkplug B both score five stars in those columns. They're built for massive horizontal scale, broker-based routing, and integration with cloud platforms like AWS IoT, Azure IoT Hub, and Google Cloud IoT.

The practical guidance is simple. Don't pick one protocol. Pick one per layer.

Citation Capsule — Protocol Selection: Selecting an IIoT protocol requires evaluating eight dimensions: latency, throughput, security, scalability, legacy compatibility, cloud-readiness, implementation cost, and ecosystem maturity. According to Deloitte's 2025 survey of 600 manufacturing executives, 54% now use a unified data model at enterprise level — confirming the shift from single-protocol to layered architectures. Source: Deloitte, 2025.

implement a Unified Namespace downloadable protocol decision tree

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What Does the Future of Industrial Protocols Look Like?

Convergence, not replacement, defines the trajectory. The global IIoT market is projected to reach $1,693 billion by 2030 at a 23.3% CAGR (Grand View Research, 2025), and 74% of surveyed companies are actively deploying or developing an IIoT strategy (HiveMQ, 2025). Growth at that scale requires interoperability — and that means protocols working together.

The Unified Namespace is the architectural pattern generating the most traction right now. It uses MQTT as the backbone to create a single topic hierarchy that centralizes all OT and IT data across a facility. Every device, every system, every data source publishes to one logical space. No more point-to-point integrations between SCADA, MES, ERP, and historian. Deloitte's 2025 data showing 54% of large manufacturers already using a unified data model confirms this isn't theoretical — it's happening on production floors today.

Time-Sensitive Networking (TSN) may reduce one of the remaining arguments for proprietary real-time protocols. TSN brings deterministic timing to standard Ethernet, which threatens the key advantage PROFINET RT and EtherNet/IP have held over commodity networks. Whether TSN actually displaces them depends on how quickly silicon costs fall and standards converge — but the direction is clear.

Private 5G networks are entering the picture for mobile assets and remote monitoring. AGVs, cranes, and field inspection equipment don't benefit from fixed cabling. Where Wi-Fi reliability has historically been a concern, private 5G offers deterministic wireless — which opens protocol choices that previously required copper. Currently, 46% of manufacturers have deployed IIoT at facility level, according to Deloitte's 2025 survey. That number will grow as wireless infrastructure matures.

Digital twin requirements are also reshaping protocol selection. A twin that accurately mirrors a physical asset needs timestamped, semantically rich data — which pushes architects toward OPC UA information models regardless of what transport they're running. Protocol selection increasingly flows backward from twin data requirements to field architecture.

Citation Capsule — Future: The global IIoT market is projected to reach $1,693 billion by 2030 at a 23.3% compound annual growth rate. Industrial protocol convergence — not replacement — defines the trajectory, with MQTT-based Unified Namespace architectures gaining adoption as 54% of large manufacturers now use a unified data model at enterprise level. Sources: Grand View Research, 2025; Deloitte, 2025.

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Frequently Asked Questions

What is the difference between MQTT and OPC UA?

MQTT is a lightweight publish/subscribe transport protocol with an 80-page specification. OPC UA is a comprehensive information modeling framework with built-in security spanning 1,200+ pages. They're complementary — since 2018, OPC UA Part 14 PubSub enables OPC UA data to travel over MQTT transport (OPC Foundation, 2019). Use MQTT for transport efficiency, OPC UA for semantic richness.

detailed MQTT vs OPC UA comparison

Is Modbus still used in Industry 4.0?

Yes. Modbus remains the most widely deployed industrial protocol by installed base, with hundreds of millions of devices worldwide. However, new Modbus RTU installations have fallen to ~2% of fieldbus nodes. Modbus TCP holds at 4% of industrial Ethernet, providing a migration bridge to modern networks (HMS Networks, 2025). It's stable infrastructure, not a growth story.

Modbus TCP vs RTU Guide

Can OPC UA and MQTT work together?

Yes. The OPC Foundation released Part 14 PubSub in 2018, defining how OPC UA's information model rides MQTT's lightweight transport. This combination delivers semantic data modeling with minimal bandwidth overhead — the OPC Foundation's own recommended approach for cloud integration in IIoT architectures. Most enterprise IIoT stacks we've deployed use exactly this combination.

configure your first OPC UA server

What is Sparkplug B?

Sparkplug B is an Eclipse Foundation specification that extends MQTT with standardized topic namespaces, birth/death certificates for device lifecycle tracking, and Google Protobuf payload encoding. It gives MQTT the structure needed for industrial use without OPC UA's complexity. Adoption is growing, particularly in Unified Namespace implementations, though quantified market share data from tier-1 sources isn't yet available.

Sparkplug B Explained for IIoT

Which industrial Ethernet protocol has the largest market share?

PROFINET leads at 27% of newly installed nodes worldwide, followed by EtherNet/IP at 23% and EtherCAT at 17%. PROFINET's cumulative installed base reached 78.8 million nodes in 2024, with 9.5 million added that year alone (HMS Networks, 2025; PI International, 2025). EtherNet/IP dominates in North America and process industries.

PROFINET Overview and Use Cases

What is a Unified Namespace (UNS)?

A Unified Namespace is an MQTT-based data architecture that centralizes all operational and business data into a single topic hierarchy, replacing point-to-point integrations. Think of it as a single source of truth for every data point across OT and IT. Deloitte's 2025 survey found 54% of large manufacturers ($500M+ revenue) now use a unified data model at enterprise level (Deloitte, 2025).

Unified Namespace Implementation: Step-by-Step

How do I migrate from Modbus to MQTT?

Use protocol gateway devices that translate Modbus RTU/TCP registers into MQTT topics. Sparkplug B provides standardized topic structures, and most gateway vendors support this path with no PLC reprogramming required. Start with non-critical monitoring points before migrating control loops. Budget 2-4 weeks per 100 devices for gateway deployment and testing. We've seen teams underestimate documentation time — register mapping takes longer than the gateway config.

Protocol Selection Decision Tree

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Conclusion: Build in Layers, Not Silos

The engineers who struggle most with protocol selection are the ones looking for a single answer. There isn't one — and the market data confirms it. PROFINET dominates real-time field control. MQTT dominates cloud-scale telemetry. OPC UA dominates semantic interoperability. These aren't competing winners. They're different tools for different layers.

Here's what we'd take away from everything covered in this guide:

• The protocol wars are over. Convergence won. MQTT + OPC UA PubSub + Sparkplug B is the emerging standard IIoT stack. Architecture decisions made today should assume this combination, not fight it.
• Layer-based selection beats single-protocol thinking. Pick one protocol per layer — field, edge, cloud — and let each do what it was designed for.
• Industrial Ethernet owns 76% of new installations and growing. Legacy fieldbus isn't dead, but new deployments are increasingly Ethernet-first.
• Vendor neutrality matters. Every major comparison online comes from a protocol vendor. Evaluate based on your requirements, not their marketing.

Use the 8-dimension scoring matrix above to evaluate your own stack against these dimensions. Then explore the spoke articles below for deep dives on individual protocols and step-by-step implementation guides.

Protocol Selection Decision Tree

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Deep Dives

• MQTT for Industrial IoT: Deep Dive
• Sparkplug B Explained for IIoT
• PROFINET Overview and Use Cases

Comparisons

• MQTT vs OPC UA: Neutral Comparison
• Modbus TCP vs Modbus RTU Guide
• MQTT Broker Comparison: HiveMQ vs Mosquitto vs EMQX

How-To Guides

• EtherNet/IP Configuration Guide
• Unified Namespace Implementation: Step-by-Step
• Protocol Selection Decision Tree

Configuration

• OPC UA Server Configuration Tutorial

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About the Author: Rihards Niparts is a Sales Engineer working with industrial sensors and IIoT connectivity. His analysis is vendor-neutral and grounded in industry standards like IEC 61158 and ISA-S95.