Captia.ai vs Ignition: An Honest Comparison of Two Platform Models

Ignition, by Inductive Automation, and the Captia Connect plus Captia.ai pairing solve a similar problem (capturing plant data and putting it to work) with two opposite models: a platform to build on your own server versus a managed web platform with an edge in the plant. This comparison is written by a competitor, so the rule is simple: every claim about Ignition is verifiable on the Inductive Automation website, and we openly say where Ignition wins. A reader who spots a rigged comparison is right to dismiss its author.

Summary: two different models

Ignition is a SCADA and IIoT software platform installed on the customer's server and licensed per server, with unlimited tags, clients and connections. On that foundation, the customer or their integrator builds the application: screens, scripting, data model, reports. It is a maximum-flexibility approach that presumes engineering capacity, in-house or contracted.

Captia Connect and Captia.ai split the same problem into two layers: Connect is the acquisition edge in the plant (multi-protocol, normalisation, local buffering, secure delivery) and Captia.ai is the web platform where the data is put to work: web SCADA, dashboards, rules, alerts, workflows, reporting, APIs and built-in AI modules. The customer administers no application servers: they operate from the browser, and deployment can be local, hybrid or cloud.

The practical consequence: comparing feature by feature is less useful than comparing models of responsibility. With Ignition, the platform is yours and the outcome depends on what you build on it. With Captia, the platform is a service and the outcome depends on what the vendor has already built and how it adapts to your plant.

Deployment and licensing

Ignition is sold by the server: one licence covers unlimited tags, clients and device connections on that server. For large installations it is a very efficient model, and one of the reasons for its success against the per-point licensing of classic SCADA. In exchange, the server is the customer's responsibility: hardware or virtual machine, operating system, backups, version upgrades and high availability if needed.

In the Captia model, the only component installed in the plant is the Captia Connect edge, which runs in containers and keeps capturing and storing locally even if connectivity drops. The Captia.ai platform is operated as a web service: no application server to maintain, no version migrations on the customer's plate. For an SME without a dedicated industrial IT team, that difference usually weighs more than any feature list.

Connectivity and data acquisition

Here the two approaches are more alike than the marketing suggests: both start from the fact that you have to speak each machine's protocol. Ignition solves connectivity with drivers and modules on its gateway. Captia Connect does it with its multi-protocol edge layer: OPC UA, Modbus TCP and RTU over RS-485, MQTT, IEC 870-5-102 for meters, REST, webhooks and CSV files, with normalisation at the source and persistent buffering so no gaps open in the history. The detail of that layer is in the guide to the industrial data platform.

Visualisation: Perspective versus web SCADA

Perspective, Ignition's HTML5 visualisation module, builds screens that run in the browser and on mobile, and it is among the best parts of the platform: anyone who wants to design every last pixel of their application will find a powerful tool there. The trade-off is that the screens must be built: it is development work, both initial and ongoing.

Captia.ai is a web SCADA out of the box: dashboards per asset, line, role or plant, history, alerts and reporting as part of the product, configurable without a development project. Less design freedom than Perspective; far less effort to get the plant on screen. Which side of the scale weighs more depends on whether visualisation is, for you, a product to configure or an application to design.

AI and analytics

This is the clearest product difference. In Ignition, advanced analytics is built: the platform provides the foundation (data, scripting, modules) and the integrator develops on top or connects third-party tools. In Captia.ai, the AI modules are part of the platform: anomaly detection, predictive maintenance, demand forecasting and energy and production optimisation, fed by the data Captia Connect already captures and normalises. If the end goal of the project is precisely that intelligence layer, starting with it built in shortens the path considerably.

Where Ignition wins

Ecosystem and maturity. A well-established platform, with a large community, its own documentation and training and an international network of certified integrators. For large, critical projects, that backing genuinely reduces risk.
Total flexibility. Scripting, modules and complete control of the application: if your project needs something very specific, with Ignition it can be built.
Very large installations. The per-server licence with unlimited tags shines with hundreds of thousands of signals and dozens of concurrent clients.
Absolute infrastructure control. If your policy requires everything to run on your own servers administered by your team, that is exactly Ignition's model.

Where Captia is the better fit

Plants without a dedicated industrial IT team. The vendor operates the platform; only the edge lives in the plant.
Projects whose destination is AI. Anomalies, predictive maintenance and energy optimisation come as modules, not as later development.
Nearby support. A team in Spain, in Spanish: whoever designs the platform deploys it in your plant and answers afterwards.
Time to first value. Web SCADA, dashboards and alerts are a configurable product, not an application to be built.

Comparison table

Criterion	Ignition	Captia Connect + Captia.ai
Model	Software installed on the customer's server	Edge in the plant + managed web platform
Licence	Per server, unlimited tags and clients	Service; no application server on the customer's plate
Visualisation	Built by you (Perspective, Vision)	Web SCADA and dashboards out of the box, configurable
AI and analytics	Developed on top or via third parties	Built-in modules (anomalies, predictive, energy)
Ecosystem	Global community and certified integrator network	Product and deployment team in Spain
Best fit	Large installation, bespoke application, in-house team	SME or mid-sized plant, focus on data and AI, no server administration

Frequently asked questions about Captia.ai and Ignition

Is Captia.ai a direct replacement for Ignition?

Not exactly: they cover similar ground with different models. Ignition is a platform for building a bespoke SCADA application on your own server; Captia Connect and Captia.ai are a managed service with an edge in the plant, a configurable web SCADA and built-in AI. Which replaces which depends on whether your project needs a bespoke application or a platform ready to operate.

Can Ignition and Captia coexist in the same plant?

Yes. Captia Connect reads the standard protocols an Ignition deployment already uses (OPC UA, Modbus, MQTT) and can capture in parallel without touching the existing system. That is the usual pattern when the goal is to add the data and AI layer without modifying the SCADA that supervises production.

How do the licensing models differ?

Ignition is licensed per server, with unlimited tags, clients and connections on that server, and the customer administers the infrastructure. Captia is contracted as a service: the only component in the plant is the acquisition edge and the vendor operates the web platform. They are two different splits of cost and responsibility, not a price difference for the same thing.

For whom is Ignition better than Captia?

For large installations with an in-house engineering team or a certified integrator nearby, that want to build a fully bespoke SCADA application and administer their own infrastructure. In that scenario, Ignition's flexibility, maturity and ecosystem are real advantages that a managed platform does not replicate.

If you are weighing up both models, context helps: in alternatives to Ignition in Spain we also place the rest of the market, and our industrial data platform page shows the full architecture that Captia Connect and Captia.ai build. The first step, either way, is a mapping of your machine fleet and protocols.