Shaping the roadmap from ECC6 to S/4HANA – A guide for organisations

Strategic Insights for a Successful S/4HANA Journey

Embarking on the transformation from ECC6 to SAP S/4HANA represents one of the most significant changes an organisation can undertake. However, to maximise value from this journey, leaders must recognise that this is far more than a technology upgrade, it is an enterprise-wide transformation, one with lasting implications for strategy, operations, culture, and the bottom line. 

As a boutique management consultancy with deep expertise in SAP-enabled business transformation, we have distilled our guidance into a practical roadmap for organisations seeking to ensure their S/4HANA programme delivers meaningful and measurable business outcomes. 

Start with Outcomes, Not Just Technology

The first and most fundamental step in shaping your S/4HANA transformation roadmap is to shift the conversation away from technology and towards business outcomes. Too often, organisations treat this transition as an IT project, focusing on system features and migration timelines rather than what the organisation aims to achieve. 

• Action: Define clear objectives: Start by articulating what you are aiming to achieve. Are you targeting process automation, greater agility, real-time analytics, improved compliance, or something else? Set measurable goals that can guide decision-making throughout the programme. 

• Action: Identify and quantify ROI: Where is the return on investment, and by when do you expect to realise it? Be explicit about how much of the ROI is dependent on actual adoption of new processes and tools, this will sharpen your focus on change management from the outset. 

• Action: Craft a compelling vision: Develop a transformation vision that goes beyond technology. How will the new platform enable your people, customers, and wider ecosystem? Communicate this vision consistently to build buy-in at every level. 

• Action: Align to business strategy: Ensure the transformation aligns with your broader strategic priorities. Is your ability to win and execute on your orderbook dependent on this transformation as an enabler? Make these dependencies explicit to rally support and prioritise resources. 

Define What ‘Day one’ Really Means

A common pitfall in major transformation programmes is a lack of clarity around what constitutes “go-live”. S/4HANA is not a switch that is simply flipped; careful consideration must be given to what needs to be in place for a successful Day one, and how this fits within the bigger picture of ongoing change. 

• Action: Document the as-is state: Many organisations underestimate the complexity of their current landscape. Don’t assume your teams have a comprehensive understanding of existing processes, legacy ways of working may have evolved over time and not be fully documented. Conduct structured workshops and interviews to map current processes, systems, and pain points. This will clarify requirements and inform future state design. 

• Action: Map the Future State: With a clear view of the present, map your desired future state.  Define what must be in place to go live. Embrace a fit to standard mindset for your design. This includes systems, data, people, processes, support structures, and any transitional states that are required. Where possible, adopt SAP standard processes rather than customising the system to fit legacy habits. This not only accelerates delivery but reduces technical debt and long-term maintenance overhead. 

• Action: Transition states as part of the journey: Recognise that Day 1 is part of a broader transition. What are the temporary arrangements, workarounds, or phased capabilities needed to keep the business running smoothly during the handover? 

• Action: Big bang vs. phased launch: Decide whether a big bang approach (all at once) or a phased launch (gradual rollout by process, geography, or business unit) best fits your risk appetite and operational realities. Each approach carries distinct implications for readiness, risk, and support. 

Set Up the Right Programme Team Early

Successful S/4HANA programmes are grounded in exceptional leadership and cross-functional collaboration. The composition and commitment of your programme team will have a direct and lasting impact on outcomes. 

• Action: Stakeholder ecosystem: Secure a business sponsor or executive with real authority to champion the transformation. Engage the right mix of partners: your systems integrator (SI), a client-side partner or team to provide independent oversight, business subject matter experts (SMEs), data owners, and process owners. 

• Action: Change management leadership: From Day 1, embed dedicated change leads and business SMEs into the programme team. Their commitment is essential, not only for solution design, but for adoption, communications, and training across the organisation. 

• Action: Awareness of business context: Map what else is going on in your organisation that could impact or be impacted by the transformation. S/4HANA will touch every team and process; minimise interference and avoid overburdening key resources by sequencing other initiatives accordingly. 

Shape the Transformation Approach

Establishing a clear and robust delivery approach is crucial for maintaining momentum, managing risk, and achieving the desired outcomes. This approach should be grounded in structured discovery, rigorous design, and a relentless focus on business value. 

Architectural Landscape 

Your technology landscape will form the backbone of the new environment. 

• Action: Integration and hosting: Define how S/4HANA will interface with other systems, what will be cloud-hosted vs. on-premises, and the implications for licensing, security, and scalability. 

• Action: Support model: Outline ongoing support arrangements, including internal and external roles and responsibilities, escalation paths, and service level agreements. 

Data Strategy 

Data is at the core of any ERP transformation. 

• Action: Data cleansing and migration: Develop a robust data migration approach, with clear accountabilities for data owners. Prioritise data quality and readiness and set up ongoing governance structures to sustain value after go-live. 

Change and People Approach 

Ultimately, the success of your S/4HANA programme will hinge on people, not just technology. 

• Action: Build business engagement from Day 1: Actively involve users, allocate clear roles and resources, and carve out capacity for key contributors. Transparent, two-way communication is essential for surfacing concerns, capturing feedback, and driving continuous improvement. 

• Action: Set the team up for success: Create the environment, structures, and incentives needed to sustain high performance throughout the programme lifecycle and beyond. 

• Action: Organisation-wide readiness: Prepare the entire business for the change, not just the IT function. This includes training, communications, new ways of working, and performance management mechanisms that reinforce desired behaviours. 

Do you need change expertise? 

A successful ECC6 to S/4HANA transformation is about shaping a journey that delivers real business value, not simply migrating technology. By focusing on outcomes, clarifying what “go-live” means, assembling the right team, shaping a structured approach, and engaging the business from the outset, organisations can minimise risk, accelerate ROI, and build a foundation for sustained digital leadership. 

As you chart your path forward, remember that the most successful transformations are those that are owned by the business, guided by a bold vision, and executed with discipline, courage, and collaboration. Your S/4HANA journey can, and should, be a catalyst for lasting organisational growth and resilience. If you’d like to learn more, or just need a sounding board, please get in touch.