True cloud ERP is software built for the cloud and delivered as a service, with every customer running the same current version. Hosted ERP is traditional software running on rented servers in a data centre. On-premise ERP is installed and run on the business's own servers. All three can look similar on a login screen, but they behave very differently over the life of the system.

The real difference between them is who owns upgrades and how often you get them. With true cloud ERP, the vendor upgrades everyone on a set schedule. With hosted and on-premise ERP, every upgrade is a project the business has to plan, fund and test, which is why so many systems end up years behind.

That difference shapes cost, security and how quickly a business can adopt new capabilities. NetSuite is a true cloud ERP that delivers two major releases a year to every customer, and a NetSuite implementation is set up so those releases arrive without a rebuild. This guide compares all three models honestly, including where hosted or on-premise still make sense.

What Is True Cloud ERP?

True cloud ERP is a single application that the vendor runs for all of its customers, usually on a multi-tenant platform. Customers subscribe rather than buy licences outright, and they access the system through a browser or mobile app from anywhere.

Because there is only one version, the vendor upgrades everyone at once. New features, security patches and compliance changes arrive automatically, and customisations built with the vendor's tools carry forward through each release. The business doesn't need servers, database administrators or an upgrade budget.

The trade-off is control. You work within the vendor's release schedule and platform rules, and deep changes to the core code aren't possible. For most growing businesses that's a benefit rather than a limit, because it stops the system from drifting into a one-off build nobody can upgrade.

What Is Hosted ERP?

Hosted ERP, also called self-hosted or private cloud ERP, is traditional ERP software installed on servers in a data centre instead of the office. It is accessed over the internet, so it looks like cloud software, but underneath it behaves like an on-premise system.

Each business runs its own copy, often customised, on its own version. Upgrades don't happen automatically; they're separate projects, usually with a partner, and they get harder the further the version falls behind. The hosting provider looks after the hardware, but the application, its upgrades and much of its security remain the business's responsibility.

Hosted ERP suits a business that wants to move servers out of the office while keeping a heavily customised legacy system it isn't ready to replace. It's often a staging point rather than a destination.

What Is On-Premise ERP?

On-premise ERP is installed on servers the business owns and runs, in its own building or comms room. It gives the most direct control over the software, the data and the infrastructure.

That control comes with full responsibility. The business buys and replaces the hardware, manages backups and disaster recovery, applies security patches, and funds every upgrade. Remote access needs its own setup, and adding users or entities can mean adding servers.

On-premise still fits some situations: businesses with strict data residency or connectivity constraints, or operations where a site must keep running without an internet connection. For most mid-sized Australian businesses, though, the ongoing cost and effort now outweigh the control it offers.

How True Cloud, Hosted and On-Premise ERP Compare

Cost is the first difference most businesses notice. True cloud ERP is a predictable subscription with no hardware to buy, while hosted ERP adds hosting fees to licences and support, and on-premise ERP needs upfront licences and hardware plus ongoing IT staff and replacement cycles. The cheapest option in year one is rarely the cheapest over five years once upgrades are counted.

Upgrades are where the models split most sharply. True cloud customers stay current automatically, while hosted and on-premise customers pay for each upgrade and often skip several, leaving them on unsupported versions. Customisation follows the same pattern: hosted and on-premise allow deeper code changes, but every change makes the next upgrade harder, whereas true cloud customisations are built to survive releases.

Access and scalability favour true cloud as well. Staff can work from anywhere on any device, and adding users, subsidiaries or locations is a configuration change rather than an infrastructure project. Hosted ERP offers remote access but often through extra layers such as remote desktop, and on-premise needs its own remote access setup.

For a broader look at what cloud ERP offers growing businesses, see our guide to the advantages of cloud-based ERP for small businesses.

Security and Compliance Across the Three Models

No deployment model removes security responsibility; each one shifts it. With true cloud ERP, the vendor secures the infrastructure, the application and its patching, while the business remains responsible for who has access, what they can do, and how quickly access is removed when people leave. With hosted and on-premise ERP, more of that work stays with the business or its IT provider.

The stakes are real for Australian businesses. According to the Australian Signals Directorate's Annual Cyber Threat Report 2024–25, the average self-reported cost of cybercrime per report for small businesses rose 14% to $56,600. A system that is behind on patches is a common way in, which is where automatic upgrades matter.

The older argument that on-premise is inherently more secure doesn't hold up for most mid-sized businesses. A large cloud vendor typically invests more in security, monitoring and certification than a single business can afford. On-premise can still be the right answer where regulation or data residency rules demand it, but it only stays secure if the business funds the patching, monitoring and expertise to match.

Which Deployment Model Fits Your Business?

The right model depends on how much control you need and how much ongoing responsibility you're willing to carry. A simple way to decide:

• Choose true cloud ERP if you want to stay current, grow into new entities or locations, and avoid running infrastructure.
• Consider hosted ERP if you have a heavily customised legacy system you can't replace yet and want servers out of the office in the meantime.
• Keep on-premise ERP only if regulation, data residency or offline operation genuinely requires it, and you can fund the IT effort that comes with it.

For most growing Australian businesses, the choice comes down to which platform will still be current in five or ten years. That depends on how much the vendor keeps investing in the product, and how easily those improvements reach your business without an upgrade project.

The deployment model is also only one part of a wider change. Our guide to digital transformation technologies explains where cloud ERP sits alongside integration, data, AI and automation.

Choosing the Right ERP Deployment Model

True cloud, hosted and on-premise ERP differ most in who carries the upgrades and the security work. True cloud keeps the business current with the least ongoing effort, hosted ERP is a useful bridge for legacy systems, and on-premise fits only where control genuinely outweighs cost. For most growing businesses, the deciding question is which system will still be current years from now.

If you're weighing a move off a hosted or on-premise system, see how a NetSuite implementation with DWR gets you onto a true cloud platform, or speak with a NetSuite specialist.

Platform capabilities evolve through regular updates. Feature comparisons reflect current understanding. Verify specific functionality with vendors before making purchasing decisions.

Pricing information is based on publicly available data and industry knowledge. Actual costs vary based on business size, complexity, implementation scope, and specific requirements. Contact vendors directly for customised quotes.