Cloud ERP vs On-Premise: A Responsibility and Cost Checklist

Choose cloud or on-premise ERP by comparing the actual responsibilities, operating dependencies, recovery arrangements and full quoted cost of each proposed setup. The hosting label alone does not establish security, implementation speed or how the factory works during an outage.

Start with the workflows and systems that must remain available. Include stores entry, production instructions, quality release, purchasing and the interfaces your team depends on. Then ask who is responsible for each part of the proposed service.

Define the deployment being offered

Cloud ERP runs on hosted infrastructure and may be supplied as a managed application service or as a more customer-managed arrangement. On-premise ERP runs on infrastructure at the organisation's premises, with responsibility divided between its staff and contracted providers.

SAP's cloud ERP deployment overview distinguishes public, private and hybrid options. Ask vendors to describe their actual service boundaries. “Cloud” does not automatically mean every operational responsibility belongs to the provider, and “on-premise” does not mean every dependency works without an internet connection.

Compare responsibilities in writing

A backup that has never been restored is incomplete evidence for recovery. Ask for the agreed recovery objectives and the scope of the test, including attachments and interfaces where relevant. Confirm responsibilities in the actual contract rather than inferring them from a product page.

Test an outage against the factory workflow

Trace one planned disruption: the site internet connection fails while a receipt and production update are due. Ask what can still be read or entered, how users know a record is current and how interim entries are reconciled after recovery.

For a local installation, also consider local power, network, server and support availability. For a hosted application, inspect the local devices and connections as well as the provider's service. Offline behaviour is a specific capability to demonstrate; neither deployment name proves it.

Compare five-year cost components on the same scope

Five years contains 60 months. If the quote uses monthly recurring charges, calculate those charges over the agreed user/module scenario, then add the separately quoted implementation and operating costs. This guide supplies no vendor prices or investment return estimate.

Use the same locations, users, workflows and support hours in both proposals. Evaluate how the result changes if more users or a new interface are added. A lower first invoice does not establish a lower cost for the complete implementation.

Choose from demonstrated fit and assigned responsibility

Record the gaps, required work and responsible owners beside each proposal. A team with limited infrastructure support may value a managed service, but it still needs owners for data, permissions, workflow decisions and user readiness. Specific hosting requirements should be checked against the actual business and customer obligations.

Use the implementation readiness checklist and integration planning guide to define the work beyond hosting. Ask the Optiwise team for the offered deployment model, responsibilities and quoted scope before deciding.

Questions from manufacturing teams

Is cloud ERP always more secure than on-premise ERP?

No. Security depends on the controls, configuration and people responsible for operating the service. Compare actual access, maintenance, monitoring and recovery arrangements for each proposal.

Does on-premise ERP work when the internet fails?

That depends on its application, authentication, interfaces and other dependencies. Test the required offline behaviour in the proposed setup rather than assuming it from the hosting location.

How should a manufacturer compare ERP hosting costs?

Use the same users, modules, locations and support scope. Include recurring charges, implementation, customer-paid infrastructure, interfaces, internal effort and future changes while avoiding double counting.