AVEVA is the enterprise incumbent of industrial software. System Platform and InTouch — the lineage that began as Wonderware — run control rooms in refineries, power plants, and water utilities on every continent, and the PI System is the most widely deployed process historian in heavy industry. Competing with that pedigree honestly means starting with respect for it. This comparison walks through where AVEVA's depth is genuinely worth the project it takes to deploy, and where a single, custom-quoted platform that goes live in days is simply the better tool.
Choose AVEVA if you are running a refinery-scale facility with thousands of I/O points, an existing PI System investment your engineers and analysts depend on, in-house or contracted controls engineering, and the budget and timeline for an integrator-led project. System Platform's object model and AVEVA's global integrator network are unmatched at that scale.
Choose Merobix if you operate distributed or mid-size sites and want monitoring, alarming, and a historian live in days — one platform, cloud-hosted or on-premise, custom-quoted as a flat plan with no per-tag, per-client, or per-module licensing, backed by a 99.9% cloud uptime SLA and sub-30-second SMS and email alarms. Both answers are legitimate; the rest of this page explains which one is yours.
A note on perspective: we are Merobix, so we are a competitor writing about AVEVA. Everything here about AVEVA is drawn from what is commonly known and publicly documented about the product line, and we have flagged clearly where AVEVA is simply better. If you want the wider field beyond these two, our AVEVA alternatives comparison and the comparison hub cover every major matchup.
| Dimension | Merobix | AVEVA (System Platform / InTouch) |
|---|---|---|
| Architecture | One platform: monitoring, alarming, historian, and dashboards in a single product | Layered suite: Application Server (galaxy), InTouch HMI, Historian / PI System, engineered together per project |
| Deployment model | Managed cloud (live in 3–5 days) or on-premise on your servers/VMs, including air-gapped | On-premise integrator-led project; cloud options exist, but engineering is still project-based |
| Licensing model | Custom-quoted flat plans — Starter, Professional, Enterprise; no per-tag, per-client, or per-module fees | Flex subscription or perpetual licensing, commonly scaled by I/O count, client sessions, and modules |
| Protocol support | 20 drivers across 7 families: Modbus TCP/RTU, OPC UA/DA, EtherNet/IP, Siemens S7, DNP3, BACnet, MQTT Sparkplug B, IEC 60870-5-104, PROFINET, HART-IP and more | Extensive device connectivity through OI Servers and a decades-deep driver ecosystem |
| Alarming | SMS and email delivery in under 30 seconds, included on every plan | Full alarm framework in InTouch / System Platform; remote notification typically added via extra components or custom engineering |
| Historian | Built-in time-series historian; historian federation on Enterprise | AVEVA Historian and the PI System — the deepest historian ecosystem in industry |
| Integrations | Enterprise plan: SAP, Maximo, ServiceNow, PagerDuty, AWS IoT, Azure IoT, Kafka, Tableau | Mature ecosystem around PI, AVEVA's cloud portfolio, and the broader Schneider Electric family |
| Security | Enterprise adds LDAP, SAML, RADIUS, FIDO2, and SIEM integration; on-premise supports air-gapped operation with full data residency | Enterprise-grade OT security capabilities; hardening is designed and maintained per project by your team and integrator |
| Redundancy / SLA | 99.9% uptime SLA on cloud; hot standby redundancy included in Enterprise on-premise | Redundant application engines and object-level failover — battle-tested, licensed and engineered as part of the project |
| Support model | Direct from the Merobix engineering team in Texas; PLC programming and UL 508A panels from the same team | AVEVA support plus a global network of certified system integrators |
The deepest difference between these platforms is not any single feature — it is what buying them looks like. AVEVA System Platform is a toolkit for building a SCADA system: an integrator designs the galaxy, develops object templates, builds InTouch screens, configures the historian, and commissions the result. That model produces exactly the system a complex facility needs, and for a gas processing plant or a refinery control room it is the right model. It also means the timeline is measured in months and the outcome depends heavily on the integrator you hire.
Merobix is a product, not a project. The cloud deployment is managed end to end by our team and is typically live in 3–5 days — drivers connected to your PLCs and RTUs, tags and alarm setpoints configured, dashboards handed over. For operations that require full control of the infrastructure, the same platform installs on your own servers or VMs, including fully air-gapped networks with complete data residency — a requirement AVEVA has traditionally served well, and one most cloud-native competitors cannot meet at all. The trade-off we accept for this speed is real and worth stating: Merobix does not offer the pixel-level custom HMI development or the object-template engineering depth of System Platform. If your operation needs a bespoke control-room application, AVEVA's model exists for a reason.
If you searched for AVEVA pricing before landing here, you already know the answer is not a number. AVEVA does not publish simple list pricing; System Platform and InTouch are quoted through the Flex subscription program and certified integrators, and licensing is commonly understood to scale with I/O count, client sessions, historian tags, and the modules you select. None of that is a criticism — it is how enterprise industrial software is sold — but it makes budgeting an exercise in quotation, and growth (more tags, more operators, more sites) carries a licensing meter.
Merobix prices differently: a custom-quoted flat plan — Starter, Professional, or Enterprise — with the full platform included. No per-tag fees, no per-client sessions, no protocol drivers sold separately, no historian module on a second invoice. Enterprise adds hot standby redundancy, the full identity stack (LDAP, SAML, RADIUS, FIDO2, SIEM integration), historian federation, and the business-system integrations. The honest caveat: because both vendors quote per operation, the only real comparison is quote against quote for your site count and I/O — our SCADA total cost of ownership comparison shows how to structure that evaluation, and our licensing models guide decodes the terminology on both sides. The ROI calculator can frame what deployment speed alone is worth.
On device connectivity, both platforms cover the industrial mainstream. AVEVA's OI Server ecosystem reflects decades of installed base and reaches an enormous range of devices. Merobix ships 20 protocol drivers across 7 families — Modbus TCP/RTU, OPC UA and OPC DA, EtherNet/IP, Siemens S7, DNP3, BACnet, MQTT Sparkplug B, IEC 60870-5-104, PROFINET, and HART-IP among them — included in every plan rather than licensed per driver. For the PLC fleets most operators actually run, either platform connects; the difference is what the connection costs and who configures it.
Alarming is a sharper contrast. Merobix delivers SMS and email alarms in under 30 seconds, on every plan, as core platform behavior. In the AVEVA world the alarm framework itself is comprehensive, but getting an alarm to a phone at 2 a.m. typically involves additional components or custom engineering — capable, but another line item and another thing to maintain.
The historian is where AVEVA deserves the longest concession in this article. The PI System is the reference process historian of heavy industry — its analytics tooling, its integration ecosystem, and the sheer number of engineers fluent in it are assets no competitor fully matches. Merobix includes a built-in time-series historian on every plan and historian federation on Enterprise for multi-site querying, which covers monitoring, reporting, and compliance for the operations we serve. But if your organization has built years of asset analytics on PI, that investment is a legitimate reason to stay — or to keep PI in place while Merobix handles monitoring and alarming alongside it.
Replacing an incumbent enterprise platform is rarely a forklift event, and it should not be. The practical path most operators take with Merobix is parallel operation: Merobix connects to the same PLCs and RTUs over OPC UA/DA, Modbus, EtherNet/IP, Siemens S7, or DNP3 — reading alongside the existing AVEVA installation without touching control logic — at a pilot subset of sites. You compare alarm behavior, trend data, and operator workflow side by side for a few weeks, then phase the cutover on your own schedule.
Coexistence is also a legitimate end state, not just a transition. Operations with a deep PI investment sometimes keep PI as the enterprise analytics layer while Merobix handles day-to-day monitoring and sub-30-second alarming; Enterprise historian federation keeps multi-site data queryable in one place. Where InTouch screens are embedded in packaged OEM equipment, they can simply stay. Our SCADA migration guide covers sequencing, tag mapping, and cutover risk in detail, and a guided demo against your own site list is the fastest way to scope what a pilot would look like. Questions about a specific AVEVA estate — galaxy size, PI archives, redundancy requirements — are welcome at [email protected].
For distributed operations that want SCADA running in days instead of quarters, yes. Merobix delivers the core of what most AVEVA buyers actually use — real-time monitoring, sub-30-second SMS and email alarming, a built-in historian, and 20 protocol drivers across 7 families — as one custom-quoted plan with no per-tag, per-client, or per-module fees, deployable cloud-hosted or on-premise. AVEVA remains the stronger choice for refinery-scale control rooms built on System Platform's object model and the PI System ecosystem, where its depth and integrator network are unmatched.
AVEVA does not publish simple list pricing. System Platform and InTouch are quoted through the AVEVA Flex subscription program and certified integrators, and the licensing is commonly understood to scale with I/O count, client sessions, historian tags, and optional modules. In practice the software quote is only part of the budget — integrator engineering typically dominates total project cost. Merobix takes the opposite approach: pricing is custom-quoted for your operation as a flat plan (Starter, Professional, or Enterprise) with the full platform included, so the quote you receive is the cost you carry.
AVEVA System Platform projects are integrator-led engineering efforts — galaxy design, object templates, InTouch screen development, historian configuration, and commissioning commonly run several months for a mid-size facility. Merobix cloud deployments are managed by our team and typically live in 3–5 days; on-premise deployments on your servers or VMs take modestly longer. The difference is architectural: Merobix is configured, not custom-built.
Yes. Merobix reads from the same PLCs and RTUs over open protocols — OPC UA and OPC DA, Modbus TCP/RTU, EtherNet/IP, Siemens S7, DNP3, and MQTT Sparkplug B among its 20 drivers — without modifying your control logic or touching the existing AVEVA installation. Many operators run Merobix in parallel at a subset of sites first, compare alarming and historian data side by side, and then phase the migration on their own schedule. Existing PI System archives can stay in place during and after the transition.
Three things stand out. The PI System is the most widely deployed process historian in heavy industry, with an analytics and integration ecosystem no competitor fully matches. System Platform's object-oriented galaxy architecture is proven at refinery and power-plant scale, where thousands of I/O points and redundant application engines are standard. And AVEVA's global network of certified system integrators means experienced engineering help is available in nearly any region or vertical. If your operation depends on those strengths, AVEVA has earned its incumbency.
One platform, cloud or on-premise — live in 3–5 days in the cloud, custom-quoted as a flat plan with no per-tag or per-client fees.