Moving to cloud ERP is a business transformation. Key decisions, common risks and five steps for a successful cloud ERP migration.
Enterprise resource planning (ERP) systems run finance, procurement, inventory and often HR and manufacturing. Many organisations are moving from heavily customised on-premises ERP to cloud-based platforms.
Why organisations move
- Regular vendor updates instead of large, infrequent upgrades.
- Less infrastructure to run and patch.
- Standardised processes and built-in analytics.
- Easier integration with modern cloud services.
Key decisions
Clean core or lift and shift? Cloud ERP works best when customisations are minimised and processes follow standard best practice, with extensions built outside the core. Re-creating every legacy customisation adds cost and slows future updates.
Big bang or phased? A single cut-over is faster but riskier; phased rollouts by module, region or business unit spread the risk but extend the programme.
Common risks
- Poor data quality migrated into the new system.
- Underestimating integration work with surrounding systems.
- Insufficient time for testing and user training.
- Weak executive sponsorship for process change.
Steps to success
- Define business outcomes and success measures.
- Map current processes and decide where to adopt standard ones.
- Clean and govern master data early.
- Plan integrations and reporting.
- Test thoroughly, train users and plan support after go-live.
Best practices that improve cloud ERP outcomes
- Adopt standard processes where possible. Cloud ERP delivers most value when organisations adapt to best-practice processes rather than recreating every customisation.
- Clean data before migration. Archive obsolete records and fix master data quality so the new system starts clean.
- Invest in change management. Training, champions and clear communication matter as much as configuration.
- Keep extensions outside the core. Build necessary extensions on the vendor’s platform or integration layer so upgrades remain simple.
- Plan for continuous updates. Cloud ERP receives regular releases; set up regression testing and release management from day one.
Choosing an approach
Greenfield implementations start fresh and allow process redesign. Brownfield conversions move existing configurations and data, reducing disruption but carrying forward legacy complexity. Selective or phased approaches migrate certain entities or processes first. The best choice depends on how well current processes serve the business.
Common mistakes to avoid
- Underestimating integration with surrounding systems such as CRM, procurement and payroll.
- Treating ERP as an IT project rather than a business transformation.
- Compressing testing to meet a go-live date.
- Losing key business experts to day-to-day work during the project.
Frequently asked questions
How long does a cloud ERP migration take?
Mid-sized organisations often take 9 to 18 months; large global programmes can take several years in phases.
Is cloud ERP secure?
Leading providers offer strong security, but customers remain responsible for user access, configuration and data governance.
A 90-day mobilisation plan
Days 1 to 30: confirm business objectives, name an executive sponsor and process owners, and document current customisations, integrations and pain points.
Days 31 to 60: decide between a fresh implementation, conversion or phased approach, select a systems integrator and start cleansing master records.
Days 61 to 90: hold fit-to-standard workshops, agree the integration architecture and finalise a plan with realistic testing and training time.
Questions to ask systems integrators
- How many similar migrations have you delivered in our industry and region?
- Which accelerators and templates will you use?
- How will you manage scope and customisation requests?
- What is your approach to testing and cutover?
- How will knowledge be transferred to our internal team?
Key terms explained
- Fit-to-standard: workshops that compare business needs with the software’s standard processes.
- Greenfield: a fresh implementation with redesigned processes.
- Brownfield: converting an existing system with its configuration and history.
- Clean core: keeping the core system free of modifications to simplify upgrades.
- Cutover: the final switch from the old system to the new one.
The bottom line
Replacing a core business system is one of the most significant programmes an organisation undertakes. Success depends less on the software than on clear objectives, strong sponsorship, process owners who embrace standard practices, clean master records and enough time for testing and training. Keep extensions outside the core, plan for regular vendor updates and invest in change management. With these foundations, the move delivers a more agile, data-driven operation.
Further reading on cloud ERP
For authoritative, vendor-neutral guidance on cloud ERP, see APQC’s process frameworks. You can also browse our free whitepapers.
