SAP S/4HANA Migration for Polish Branches

We don’t just do a 1:1 system migration. We leverage the transition to SAP S/4HANA as an opportunity to simplify your processes, enhance analytics, and make your business AI-ready. We run projects with a strict focus on business continuity and risk mitigation, ensuring your new system becomes a solid foundation for future growth, rather than a source of unexpected surprises.

Why move from SAP ECC to SAP S/4HANA

The end of SAP ECC support and rising risks

SAP is ending mainstream maintenance for SAP ECC in 2027. For companies staying on the legacy platform, this means a gradual halt to new security patches, functional updates, and regulatory compliance adjustments. Remaining on ECC beyond this date increases the risk of system incidents, compliance issues, and costly “firefighting” instead of executing a planned transformation. Today, SAP S/4HANA is the operational standard for global market leaders—companies that are growing the fastest, scaling their businesses, and building a competitive edge based on modern systems.

Access to a modern ERP, analytics, and AI

SAP S/4HANA is a next-generation ERP built exclusively on the SAP HANA database, featuring a simplified data model, embedded analytics, and the new SAP Fiori user experience. This enables near real-time reporting and more informed business decisions. The migration allows you to leverage innovations that SAP is no longer developing for ECC—such as automation, cloud integration, and the use of AI, including digital assistants like SAP Joule. At the same time, it is a prerequisite for accessing modern security standards and data processing capabilities within the EU.

Simplification of processes and the system landscape

The transition to SAP S/4HANA is the perfect moment to reduce redundant custom extensions, cleanse your data, redesign selected processes, and move towards the SAP standard (a Clean Core approach), rather than carrying over existing complexities 1:1. Such a system “diet” lowers maintenance costs, accelerates time-to-market for changes, and facilitates future transformation projects.

Peace of mind in planning and expert availability

By starting your migration now, you secure the time needed for a thorough assessment, roadmap creation, and business alignment—instead of operating under deadline pressure when there is no time for testing and a shortage of available consultants. After 2027, the market will be flooded with last-minute implementations, which is likely to drive up service costs and significantly extend project timelines.

Go-live in as little as 30 days

with the initial scope

How we help: Our proven SAP S/4HANA migration process
Cloud Application Lifecycle Management (Cloud ALM)

Assessment and Readiness Check – Digital Discovery Assessment

Evaluating your current system, processes, custom code, and integrations for migration, while identifying potential challenges and benefits. Depending on your organization’s needs and maturity, this assessment can range from a swift, agile analysis of key areas to a comprehensive pre-implementation review encompassing all business processes.
Process Decisions and Deployment Model Selection (Public vs. Private Cloud)

Following the assessment, it will become clear which of your processes align with the SAP S/4HANA Public Cloud standard and which require a modification or a different approach. At this stage, we collaboratively decide what to adapt and what to retain in a Fit-to-Standard approach. This enables us to provide an accurate estimate and finalize the deployment model choice—Public or Private Edition.
Migration Roadmap Preparation

Planning the migration phases, defining milestones, resources, timelines, and budgets, and determining the optimal transition path (Greenfield, Brownfield, or Selective Data Transition). The roadmap is built on the assessment results and an enterprise architecture and dependency map—utilizing solutions like LeanIX—ensuring realistic transformation planning and risk mitigation.
Environment Preparation and System Optimization

Configuring and initial cleansing of source systems, updating infrastructure, reducing customizations, and preparing data for migration. This phase also includes integration analysis and optimization—such as transitioning from legacy SAP Process Orchestration (PO) interfaces to the modern SAP Integration Suite, simplifying your architecture and boosting overall stability.
Data and Code Migration

Transferring data and custom code to the new SAP S/4HANA platform using dedicated SAP migration tools, complete with rigorous data accuracy and consistency validation.
Testing and Process Validation

Comprehensive integration, user acceptance (UAT), and performance testing to ensure the seamless and correct operation of the new system and all underlying business processes.

50% reduction in implementation costs

SAP S/4HANA transition paths

Greenfield

A fresh start with SAP S/4HANA

In a Greenfield scenario, the company moves away from its legacy SAP ECC system as the core foundation and builds a new SAP S/4HANA environment from scratch. The old system is treated as a valuable knowledge base rather than a target for technical conversion.

Processes are redesigned around the SAP S/4HANA standard (Fit-to-Standard approach), migrating only selected data, such as master data and an agreed-upon scope of history, from ECC. This empowers you to deliberately eliminate unnecessary custom extensions, workarounds, and complex legacy configurations.

Brownfield

System conversion of your existing ECC

In the Brownfield approach, your current SAP ECC system is technically converted to SAP S/4HANA. This transition retains your core configuration, the majority of custom enhancements, and your complete data history.

This path enables the organization to transition to the new platform faster and with minimal disruption to end-users. However, it also carries over some of the existing system complexity, which may limit the potential for future simplifications and agile innovations.

Hybrid Approach (Selective Data Transition)

Controlled transformation

The hybrid approach involves launching a new SAP S/4HANA system and selectively migrating specific elements from ECC—such as distinct organizational units, processes, and data scopes (e.g., selected fiscal years or specific business areas).

This provides a perfect balance between stability and transformation. The organization can harmonize and modernize the system exactly where it delivers the most value, while ensuring absolute business continuity in critical operational areas.

40-60% faster time-to-value

Tangible business benefits realized significantly faster

Our approach: Minimizing migration risks and costs

Controlled downtime and secure cutover

We plan the migration in phases, agreeing on maintenance windows well in advance and conducting multiple dry runs to accurately estimate system downtime. This ensures the final cutover to SAP S/4HANA is fully predictable for the business, keeping operational impact to an absolute minimum.

Data security and integrity

Before migration, we cleanse and classify your data, driving the process with SAP-certified tools and methodologies designed specifically for SAP S/4HANA. Every data migration stage is rigorously verified through consistency and reproducibility testing, mitigating the risk of data loss or incorrect transfer of mission-critical information across finance, logistics, and manufacturing.

Automation and workload reduction

We leverage advanced tools for custom code analysis, test automation, and the standardization of technical activities to minimize manual effort and the risk of human error. This allows your project team to focus on strategic business decisions and designing the target solution, rather than being tied up with repetitive technical tasks.

Clean Core approach and maintenance cost optimization

We treat migration as a prime opportunity to simplify your system-eliminating redundant custom code, reverting to the SAP standard wherever possible, and decoupling custom logic using SAP-recommended extensibility. This “Clean Core” strategy significantly lowers future Total Cost of Ownership (TCO), accelerates time-to-market for new features, and paves the way for seamless upgrades and the rapid adoption of new SAP cloud innovations.

"Migrating to SAP S/4HANA is rarely just a technological challenge today. It is a fundamental decision about your company's future architecture and operational model for years to come—determining whether your system will be a bottleneck or a robust platform for further growth, advanced analytics, and AI. Customers who approach this transition strategically avoid many costly adjustments post-go-live."

Tomasz Radomski, VP, Digital Transformation Advisor

Why Apollogic

Controlled cutover and business continuity

We plan the migration in phases, incorporating rigorous testing and dry runs to ensure system downtime is completely predictable and kept to an absolute minimum.

Secure and validated data migration

We cleanse your data prior to migration, validating every transfer stage through consistency checks and report reconciliations between the source and target systems.

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Predictable project scope and budget

Process and technology decisions are driven by a thorough assessment, allowing us to clearly define the deployment model, project scope, and realistic costs from the very beginning.

Comprehensive end-to-end SAP transformation support

We combine deep expertise, team scalability, and advanced SAP, Data, and AI capabilities to provide true end-to-end support—from strategy and enterprise architecture to implementation and continuous system improvement.

Let’s talk about your transition to SAP S/4HANA!

Contact us and sign up for a Readiness Check workshop. We will discuss your current SAP ECC landscape, explore viable migration scenarios, and draft a preliminary SAP S/4HANA roadmap tailored specifically to your organization.

Our areas of expertise

Finance and Accounting

We adapt SAP systems to local tax and reporting requirements, implementing solutions such as SAP Document and Reporting Compliance (SAP DRC), e-invoicing, SAF-T, and other specialized tools for finance departments.

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Procurement

We transform the procurement landscape using SAP Ariba and SAP Business Network, digitalizing the source-to-pay process, automating supplier management, and ensuring complete spend visibility.

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Business Analytics

We implement enterprise data solutions, including SAP Analytics Cloud and SAP Datasphere. By consolidating data from multiple systems, we build a robust foundation for advanced analytics and AI initiatives.

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Sales and Marketing

We build modern customer experiences powered by SAP Emarsys Customer Engagement, SAP Sales Cloud, and SAP Service Cloud, unifying customer data to seamlessly automate marketing campaigns and sales processes.

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