Posted on July 14, 2025 | All

From On-Premise to Cloud: The Real Cost of Legacy Transformation

As digital transformation accelerates, many organizations are at strategic crossroads: should we move our ERP from on-premise to the cloud? While cloud ERP promises flexibility, scalability, and cost savings, the hidden expenses and complexity of migration raise serious questions for the C-suite.

Here’s what ERP product companies, integrators, and resellers need to know to contain migration costs without compromising on performance, speed, or scalability.

Why move ERP to the cloud now?

The push toward cloud ERP is not just a tech trend—it’s a business imperative. Here’s why:

  • Rising Cost of Legacy Maintenance: On-premise systems are expensive to maintain, often needing frequent upgrades, hardware replacement, and specialist IT staff.
  • Need for Agility: Cloud ERP enables faster updates, seamless integrations, and real-time decision-making—ideal for an unpredictable global market.
  • Remote and Hybrid Work Models: Cloud ERP solutions ensure 24/7 access from anywhere, supporting modern workforces.
  • Security and Compliance: Modern cloud ERPs are built to comply with global data protection laws and offer real-time security updates.

According to Gartner, over 60% of enterprises will
move their core ERP systems to the cloud by 2027. 

What are the cost components of ERP migration?

For ERP providers, migration cost has multiple layers:

1. Direct Costs

  • Subscription fees (SaaS model)
  • Licensing fees for cloud ERP modules
  • Migration tools and third-party integrations
  • Vendor implementation fees

2. Indirect Costs

  • Training and change management programs
  • Downtime during cutover periods
  • Temporary productivity loss
  • Data cleansing and normalization efforts

3. Long-Term TCO

  • Recurring cloud service charges
  • Costs of continuous updates and patches
  • API or connector charges with third-party apps
  • Potential vendor lock-in risks

Another key cost consideration is the shift from one-time licensing to a subscription-based model. While traditional on-prem ERP involves heavy upfront capital expenditure (CapEx) for licenses and hardware, cloud ERP spreads costs over time through predictable monthly operational expenses (OpEx).

This reduces overhead, eliminates ongoing hardware and software maintenance burdens, and often results in a lower total cost of ownership—especially for growing or multi-location businesses.

Data migration costs in ERP projects can account for up to 30% of the total implementation budget, especially when dealing with legacy systems and unstructured data. It’s important to note that cost savings may not be immediately visible in the first year — but most vendors report that their clients begin to realize ROI within 2–3 years through smoother operations, better uptime, and faster innovation.

What hidden costs are often overlooked?

Despite thorough planning, these are the areas where ERP migrations tend to go over budget:

  • Customization Complexity: Re-architecting bespoke workflows for a cloud-native environment is often time-consuming and expensive.
  • Data Migration Challenges: Legacy data is rarely clean or structured for the cloud. Cleansing, deduplication, and mapping can consume 20–30% of migration time.
  • Vendor Ecosystem Dependency: Costs pile up when your ERP requires additional tools for analytics, e-commerce, or CRM—each with its own subscription.
  • Regulatory Adaptation: For industries like healthcare or finance, aligning cloud ERP with sector-specific compliance adds extra layers (and cost).

Case in Point: A European manufacturing firm reported a 15% budget overrun due to underestimated data reformatting costs during SAP S/4HANA migration.

What strategies can contain ERP migration costs?

As an ERP vendor or integrator, here’s how you can reduce the cost-to-deliver without compromising on customer experience:

  • Phased Implementation: Roll out modules in waves, not all at once.
  • Clean Data Early: Invest in pre-migration audits to reduce transformation costs.
  • Minimal Customization: Stick to standard modules wherever possible.
  • Use Vendor Toolkits: Leverage migration accelerators and APIs provided by the ERP platform.
  • Train Internal Teams: Upskill your own team to reduce dependency on high-cost external consultants.
  • Right-Size Licensing: Help clients choose only what they need at the start—and scale later.

What Cloud Gets Right That On-Prem Misses

Initially, while cost is a major consideration in ERP migration, there are operational advantages that cloud ERP delivers far better than on-prem systems. These often-overlooked factors add tremendous long-term value:

  • Hardware to Cloud: No more investing in or maintaining expensive physical infrastructure—cloud eliminates servers, data centers, and cooling systems, reducing both cost and carbon footprint.
  • Automated Load Balancing: Cloud platforms automatically handle load distribution, ensuring system performance remains smooth even during peak business hours or heavy transaction periods.
  • Built-in Security Infrastructure: Instead of relying on external security devices, cloud ERPs offer native encryption, multi-layer authentication, and 24/7 threat monitoring managed by the vendor.
  • Seamless Maintenance & Backup: Cloud systems are maintained by experts who apply patches, upgrades, and perform regular backups—minimizing downtime and protecting business continuity.
  • Proactive Interventions & Automation: Most modern cloud ERPs provide predictive diagnostics, auto-scaling, and automated issue resolution—cutting down manual intervention and IT firefighting.

What are today’s market trends around Cloud ERP?

Hybrid Cloud ERP: Tailor Deployment to Business Needs

More organizations are choosing hybrid ERP models—combining on-premise and cloud—to balance control, compliance, and scalability based on specific operational requirements.

Mobile ERP Applications: Empowering the Workforce on the Go

With mobile-first access to dashboards, approvals, and workflows, ERP mobility is transforming real-time decision-making and boosting productivity for remote and field teams.

Measuring the true ROI of cloud ERP: It’s more than cost savings

Yes. While cost savings are a motivator, cloud ERP value lies more in:

  • Speed to Innovation: Easy access to new features and updates
  • Scalability: Supporting global expansion without heavy IT investment
  • Data-Driven Decisions: Real-time analytics and KPI dashboards
  • Risk Reduction: Automatic compliance updates, backups, and security patches
  • Maintenance Relief: Hardware upkeep is no longer needed
  • Lower Licensing: Subscription model reduces license costs
  • CapEx Reduction: One-time investments are significantly reduced
  • Lean IT Needs: Fewer in-house resources are required

How to know if your client is ready to migrate?

As an ERP product or service provider, watch for these signs in your customer accounts:

  • Is their current ERP nearing end-of-life or becoming too expensive to maintain?
  • Are they asking for real-time insights but still relying on batch reporting?
  • Is IT maintenance draining budgets that could be spent on innovation?
  • Do they urgently need scalability—but face complex limitations with on-prem infrastructure?

If the answer to any of these is “yes,” cloud ERP is not just an option—it’s your competitive advantage.

Why CIG?

CIG partners with ERP product companies, integrators, and resellers to deliver seamless cloud ERP migration and engineering support. We help you scale faster, integrate smarter, and serve your clients better—all without blowing up delivery costs.

Final Word:

Cloud ERP is the direction your clients are moving toward. With the right product strategy and migration support, you can get them there—faster, smoother, and more profitably.

Need a migration roadmap?

Cloud ERP migration doesn’t have to feel like a leap into the unknown. With strategic clarity and the right implementation partner, the transformation can be seamless, secure, and scalable.

Connect with us to explore the solution migration cost structure for 2025 and beyond.