The Second Wave of S/4HANA: Optimization After Migration
- April 23, 2026
For many organizations, the SAP S/4HANA journey – with years of planning, countless hours of effort, and millions invested – is defined by the single moment when the system goes live and finally replaces the legacy ERP. But this milestone is not the finish line. The second wave of S/4HANA is still ahead: optimization.
KEY TAKEAWAYS
- The second wave of S/4HANA, often referred to as the “value realization phase,” focuses on turning system capabilities into measurable business outcomes, beginning immediately after go-live and continuing indefinitely.
- At its core, S/4HANA optimization involves two areas: process optimization and technical optimization.
- Common challenges that may come with optimization efforts include organizational fatigue, loss of accountability, technical issues, and performance impacts.
Despite the scale of S/4HANA investments, many organizations struggle to translate implementation into measurable business outcomes. Research indicates that most organizations unlock less than 40% of their S/4HANA potential after go-live. Similarly, broader industry analysis shows that around 70% of companies realize only partial value from their S/4HANA transformation. This gap is often due to what happens (or doesn’t happen) after deployment.
As one SAP-focused analysis puts it, “just because the project is ‘done’ doesn’t mean the benefits are locked in.” In fact, the majority of those benefits remain unrealized unless organizations actively pursue them in the post-go-live phase. This is the core insight behind the second wave. Implementation creates capability, but optimization creates value.
WHY THE FIRST WAVE FALLS SHORT
To understand the importance of post-go-live optimization, it helps to examine how most S/4HANA programs are structured. The first wave—migration or implementation—is typically project-driven. It focuses on data migration, system configuration, process standardization, and meeting go-live deadlines. All of these are critical considerations, but success is measured by delivery, and this approach has its limitations.
During implementation, organizations often prioritize speed and risk reduction over transformation, where processes are lifted and shifted rather than reimagined, and users are trained on how to operate the system but not necessarily how to optimize it. The result is a system that works but has not yet delivered its full potential.
This is why many organizations find themselves, months after go-live, asking: Where is the ROI?
THE SECOND WAVE: S/4HANA OPTIMIZATION
The second wave of S/4HANA is fundamentally different from the first. Often referred to as the “value realization phase,” this stage focuses on turning system capabilities into measurable business outcomes, beginning immediately after go-live and continuing indefinitely. The post-go-live period is the best time to introduce changes before new habits and inefficiencies become embedded.
At its core, optimization involves two areas: process optimization and technical optimization. Organizations should start by analyzing how processes are actually performing, using tools like process mining, and identifying opportunities to eliminate inefficiencies and improve outcomes. For example, one SAP case study shows an organization achieving more than 50% faster order processing and over 99% on-time performance after optimizing processes post-implementation. From there, technical optimization, via performance tuning, infrastructure adjustments, and ongoing monitoring, works to ensure stability and responsiveness.
POST-GO-LIVE CHALLENGES
While the importance of S/4HANA optimization is clear, executing it is far from straightforward. Common challenges may arise, such as:
Organizational Fatigue
By the time go-live is achieved, teams are often exhausted. Implementation projects can last years, consuming significant resources and attention, so once the system is live, there is a natural tendency to shift focus elsewhere. But this is precisely when momentum matters most. As one analysis notes, S/4HANA transformations often falter “not because of flawed technology, but due to a lack of sustained focus after go-live.” Without continued investment, the system risks becoming an expensive replacement for legacy processes rather than a driver of transformation.
Loss of Accountability
During implementation, accountability is clear, with well-defined project teams, timelines, and deliverables. But after go-live, that structure often dissolves. Teams disband and responsibilities shift and ownership of outcomes becomes unclear. As a result, value realization can fall through the cracks. This is one of the most common and most preventable failures in the second wave.
Technical and Performance Issues
Go-live prioritizes functionality, but performance optimization often comes later. Without proactive tuning, organizations may encounter bottlenecks in key processes or a poor user experience. Technical performance optimization (TPO) is therefore critical in the second wave, ensuring that systems are not only functional but efficient and scalable.
LOOKING AHEAD
The story of S/4HANA is evolving. The first wave is about migration, moving from legacy systems to a modern digital core, while the second wave, optimization, is where the real impact lies. It is where systems become platforms and investments begin to pay off.