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21 January 2026 · 6 min

The difference between ERP and fleet management - and why you need both

ERP solves accounting. Fleet management solves operations. Between them sits the operational layer where machines are booked, maintained and shared.

A question we get often: “We have Visma already - why do we need Leasi?”

That’s a fair question, and the answer requires us to be precise about what ERP does and doesn’t do - and where the operational layer actually lives.

What ERP does

ERPs like Visma, Unit4 UBW and Microsoft Dynamics 365 Business Central are first and foremost accounting systems. They handle:

  • General ledger, AR and AP
  • Invoices, credit notes and accruals
  • Project accounting and cost allocation
  • Payroll and reporting

What they’re extremely good at is financial truth - numbers that can be audited and reported to authorities.

What ERP doesn’t do

What ERPs aren’t built for is the daily operational reality of a fleet:

  • Which machine is going to service next week?
  • Is CAT 730 available from Friday to Wednesday?
  • What does Volvo EC230 emit on project E39?
  • When does the crane’s statutory inspection expire?

You can force the ERP to hold some of this data - but you’ll end up with a flat table that doesn’t scale, or you’ll pay a consultant to build a complex customization that’s hard to upgrade.

What fleet management tools do (and don’t)

On the other side you have fleet management tools like Trackunit or the OEM telematics portals. They’re good at sensor data - position, operations, fuel. But they stop there.

They don’t know the machine is on a rental order. They don’t know a billing line should be generated. They don’t have a data model for collaboration between companies. And they don’t export to your accounting system.

The operational layer in between

Between ERP and telematics sits the operational layer where machines are actually:

  • Booked on projects
  • Get work orders
  • Are maintained and inspected
  • Generate billing data
  • Are shared between companies
  • Are aggregated into environmental accounting and per-project emissions reports

That layer is Leasi. We don’t replace your ERP (we integrate with it), and we don’t replace telematics (we consume it via AEMP 2.0). We cover everything in between - where operational life actually happens.

Concretely - what does this mean for you?

If you have:

  • A solid ERP - keep it. Leasi talks to it
  • Telematics from OEM - good. Leasi consumes the data
  • Spreadsheets with the fleet, maintenance plans, rental orders or billing data - that’s where Leasi comes in

Book a demo if you want to see what this looks like for your business.

Ready?

Start managing tomorrow's fleet, today.

Talk to us about how Leasi fits your fleet.