OPC UA is the modern, secure, cross-platform standard for industrial connectivity - and it is the cleanest way to bridge existing systems into a cloud platform. This guide explains how to ingest OPC UA data into cloud SCADA, whether from a PLC, a gateway, or an existing OPC UA server.
How to read this page. This comparison is written and published by Merobix, which offers a competing product, so it is our own analysis and marketing - not independent, neutral, or third-party research. We aim to be accurate and to note where the products discussed may be the better fit, but you should weigh it accordingly and confirm anything that matters against the products discussed's own current documentation.
Short version: Merobix ingests OPC UA, so any device or gateway that exposes an OPC UA server - a PLC, a connectivity server like a third-party OPC server, or a legacy system fronted by an OPC UA wrapper - can feed a cloud dashboard securely, with authentication and encryption built into the protocol.
Unlike the legacy OPC DA (Windows/DCOM), OPC UA is platform-independent, firewall-friendly, and secure by design - see OPC-DA vs OPC-UA. That makes it ideal for connecting industrial data to the cloud: it traverses networks cleanly and carries authentication and encryption. Many PLCs and gateways expose OPC UA natively, and existing systems can be fronted by an OPC UA server.
Merobix consumes an OPC UA feed, so if you already run a connectivity server (for example a third-party OPC server) that aggregates many devices into OPC UA, Merobix can sit on top and add cloud monitoring, alarming, and history without replacing your connectivity layer. Where devices expose OPC UA directly, Merobix reads them; where they do not, a gateway can bridge them to OPC UA first.
Yes. Merobix consumes OPC UA, so an existing OPC UA server - including a connectivity server like a third-party OPC server that aggregates many devices - can feed the cloud platform, and Merobix adds monitoring, alarming, and history on top.
OPC UA has authentication, encryption, and signing built in, and is firewall-friendly - unlike the legacy DCOM-based OPC DA. That makes it well suited to bridging industrial data to the cloud securely.
A gateway or wrapper can expose legacy OPC DA sources over OPC UA, which Merobix then ingests. This modernizes connectivity without ripping out old servers.
This page references the protocol specifications published by the organizations below. Editions, product capabilities, and documentation change over time - confirm current requirements and specifications directly with the source.
Last reviewed: July 27, 2026. Merobix is not affiliated with, endorsed by, or sponsored by these organizations; their names are used only to identify the standards and products discussed.
We compare current, generally available capabilities using publicly available information and Merobix's understanding, and we describe operating models and cost structure rather than quoting a competitor's confidential prices. Product capabilities, editions, licensing, and pricing change over time and vary by configuration.
This comparison draws on the vendor's publicly available product documentation and pricing pages together with Merobix's own product knowledge. Where a specific figure is not published by the vendor, we say so or omit it rather than estimate a competitor's private pricing.
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Disclosure & trademarks. Merobix authored this page and may compete with the companies discussed; it reflects our opinions and interpretation and may be incomplete or out of date. Verify current capabilities, editions, and pricing with the respective vendor before making a decision.
Third-party products and all other third-party product names, company names, logos, and brands are the property of their respective owners and may be trademarks or registered trademarks of those owners. They are used here only to identify and compare the products (nominative use); their use does not imply any affiliation with, sponsorship by, or endorsement by those owners, and Merobix is not affiliated with them.
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