SCADA, CRM and ERP: how they differ and what you need

Briefly: what question each one answers

SCADA — "what is the equipment doing right now". Machine state, sensors, alarms, control. It works in seconds and minutes.

CRM — "what is happening with the customer". Enquiries, deals, conversation history. It works in days and weeks.

ERP — "what is happening with the company". Money, resources, planning, accounting. It works in months and quarters.

WMS — "what is in the warehouse". Stock, locations, picking, dispatch.

Why they get confused

Because they overlap at the edges. SCADA counts output — which looks like accounting. ERP also has a warehouse — which looks like WMS. CRM also has invoices — which looks like bookkeeping.

The overlap is real but shallow. A warehouse module in an ERP works for dozens of items and fails for a warehouse with addressed storage. An accounting module in SCADA will show a figure but will not post it in the books.

The typical buying mistake

The most common one: buying a large ERP in the hope it covers everything. A year later it turns out production data never reached it, because nobody connected it to the equipment, and the warehouse is still run in a spreadsheet alongside.

The second most common: writing your own system "for everything". It works while its author maintains it, and becomes unliftable the moment they leave.

The sane approach is to identify where it actually hurts, close that area, and leave clean boundaries for other systems.

Where our part sits

We work where physical equipment meets money: pulling data off a controller, counting what was produced and what was taken, tying that to orders and documents. It replaces neither ERP nor CRM — it is the layer usually missing between them.

If you already have an accounting system, the right move is to connect to it rather than replace it. Replacing a working accounting system costs more than it looks and is rarely worth it.

Frequently asked