From Legacy to Modern: Rethinking ERP Systems in the Cloud Era
Enterprise Resource Planning (ERP) systems were once the backbone of operational efficiency. But in today’s cloud-first world, many of those once-powerful platforms now act more like anchors. Organizations stuck with decades-old, on-prem ERP systems are facing mounting technical debt, slow innovation cycles, and increasing costs to maintain outdated infrastructure. Meanwhile, cloud-native competitors are moving faster, innovating more easily, and gaining real-time insights across the business. This isn’t just an IT challenge, it’s a strategic one.
What’s Driving ERP Modernization?
Several forces are converging to make ERP transformation not just a good idea but a business necessity:
- Aging infrastructure and skills gaps: Many legacy ERP systems were built in the late 90s or early 2000s. The talent pool that can maintain and extend these systems is shrinking, and performance issues are growing.
- Complexity and fragmentation: Customizations built up over time lead to brittle environments. Integrating new tools, data sources, and workflows becomes painful and expensive.
- Cloud-native competitors: Newer players aren’t burdened by legacy systems. They spin up scalable, flexible ERP modules in the cloud, experiment fast, and adopt new AI capabilities without a major overhaul.
- Economic pressure: Companies aim to transition from a CapEx-heavy ERP infrastructure to an OpEx model that’s elastic, more transparent, and better aligned with business growth.
A recent KPMG report found that 73% of enterprises plan to upgrade or replace their ERP systems within the next two years, in order to meet customer demand, enhance business performance, and mitigate risks.*
Why Legacy ERP Isn’t Built for Today’s BusinessTraditional ERP systems were designed for an era when change was slow and linear. Today, business environments shift in real time.
Legacy ERPs often slow growth and increase risk, at a time when both speed and resilience are crucial. |
The Cloud ERP Advantage: It’s Not Just About Hosting
Shifting ERP to the cloud isn’t a simple lift-and-shift of legacy systems. It’s a chance to rethink the architecture, processes, and how value is delivered.
Here’s what modern cloud ERP brings to the table:
- Elastic scalability: Systems expand with your needs. No more worrying about server capacity during peak times or expansion into new markets.
- AI and analytics integration: Tools like Google Cloud’s Looker and Vertex AI integrate seamlessly with cloud ERPs, enabling predictive analytics and smarter decision-making.
- Stronger security posture: Leading cloud platforms invest billions in security. With automated patching and built-in compliance, risk is significantly reduced.
- Better user experience: Modern ERPs offer intuitive, mobile-friendly interfaces. Business users can get what they need without depending on IT.
Rethinking the Migration Path
Migrating ERP is complex. But it’s also an opportunity to rethink architecture, eliminate inefficiencies, and realign systems with business goals.
As Deloitte emphasizes, successful ERP transformation starts by aligning with strategic priorities, not just technical milestones.*
Here are three migration paths we typically see:
- Lift and modernize: Move ERP workloads to a cloud provider like Google Cloud, then refactor incrementally for improved performance and flexibility.
- Modular re-platforming: Replace legacy modules—such as finance, procurement, and HR—with cloud-native components, enabling faster deployment and innovation.
- Greenfield implementation: Build a new ERP architecture in the cloud from scratch and migrate in phases. Higher upfront investment, but maximum flexibility.
All of these should be grounded in robust data governance and integration strategy, or you risk simply replicating legacy issues in a new environment.
Vodafone’s EVO2CLOUD: A Blueprint for SuccessA standout example of ERP transformation is Vodafone’s EVO2CLOUD program. The telecom giant migrated its massive SAP ERP system—200 TB of data, ~100,000 users, and 400+ on-prem servers—to Google Cloud. Highlights of their journey:
Vodafone’s experience shows that with the right plan and platform, ERP modernization can be smooth, secure, and high-impact. |
Key Concerns from Decision-Makers (and How to Address Them)
Executives and IT leaders aren’t resistant to change, they’re cautious for good reason. Here are some of the top concerns we’ve heard and how the cloud addresses them:
“Will we lose control of our data?”
No. With platforms like Google Cloud, you retain full ownership and control over your data. Granular access permissions, audit trails, and encryption at rest and in transit are standard.
“What about integration with our current systems?”
Cloud ERPs are built for interoperability. Using APIs and tools like Cloud Pub/Sub and Apigee, integration becomes faster and more robust.
“How do we avoid disruption during migration?”
Using hybrid architectures and phased rollouts, you don’t have to rip and replace overnight. A well-designed plan limits downtime and allows business continuity. Tools like Migrate for Compute Engine support parallel operation, so there’s no need for a disruptive cutover.
The Bottom Line
Modernizing ERP isn’t just about tech. It’s about creating a platform for innovation, resilience, and faster decision-making. In a market where speed, security, and intelligence are competitive differentiators, legacy ERP simply can’t keep up.
At Kartaca, we help enterprises rethink ERP from the ground up. Whether you’re migrating SAP to Google Cloud or implementing a modular ERP with AI at the core, we build transformation strategies tailored to your goals, not just the software.
Contact us today. Let’s modernize ERP the right way.
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Kartaca is a Google Cloud Premier Partner with approved “Cloud Migration” and “Data Analytics” specializations.
Author: Gizem Terzi Türkoğlu
Published on: Feb 23, 2026
