Integrations as the "nervous system" of the entire SAP architecture

Why the problem today is not the transition to SAP Integration Suite itself, but the way companies design, manage and operate integrations – and why it is the integration layer that most often decides in practice whether SAP projects run in a controlled or painful way.

This article is a direct follow-up to our previous topics PI/PO ends. Integrations are the next big deadline in the SAP world and the SAP PCE Transition Option – a bridge between ECC and the future S/4HANA.

While we address why there is pressure for change today and how to "buy time" in the SAP environment, here we move on – to what to do with integrations as such if you don't want to deal with every new change under stress.

Most SAP problems in practice do not start in ERP

Naturally, most discussions about modernizing the SAP environment revolve around ERP – ECC, S/4HANA, Cloud, licenses or custom code. However, in the reality of the CEE market, many of the problems that managers and IT teams solve today do not start in the ERP system, but in the integration layer around it.

Integrations were created gradually – after projects, acquisitions, legislative changes or with quick business requirements. For years, it worked in such a way that while the interfaces sent data to where it was supposed to, no one systematically solved it. Therefore, SAP PI/PO was stable, familiar, and "invisible".

Only with the first major changes will the reality become apparent: complex dependencies, interfaces without a clear owner or documentation, poor monitoring and a high risk of outages. At this point, companies realize that the problem is not the specific project – but the integrations as such.

Why hasn't integration been addressed as a separate discipline for years?

Not because IT teams make bad decisions – but because SAP PI/PO has done its job reliably for a decade. The problem is that good solutions tend to stay in operation for too long and without a clear owner.

In the CEE region, the specifics of the market also contributed to this: the long service life of ECC systems, the high degree of customization, local legislative adjustments and constant pressure on budgets. Integrations were thus addressed as a side effect of projects – not as an architectural layer that deserves its own rules and management.

The result is integration layers and interfaces that work to this day, but pose a disproportionate risk with any major change.

SAP Integration Suite is not a goal, but a tool

In recent years, the discussion has often narrowed down to technical migration from SAP PI/PO to SAP Integration Suite (BTP). The end of PI/PO support logically creates pressure to act – but migration alone does not solve the problem of integrations.

If only the technology and not the way of working changes, the same chaos will move to the Cloud. Same integration patterns, same risks, same technological debt – only on a newer platform.

SAP Integration Suite should be seen as a modern tool that gives new possibilities. However, real value only arises when integrations are managed as a discipline – with a clear architecture, security model, monitoring and operational responsibility.

Why Solve Integrations Independent of S/4HANA

Many organizations are postponing the topic of integrations for a future S/4HANA project. From the point of view of the reality of the market, this is an understandable, but at the same time very risky decision.

PI/PO deadlines refer to today's operation, not the future target state. And most companies today are not looking for a big-bang transformation, but a way to manage the changes gradually and with controlled risk.

A stable integration layer acts as a damper for further changes. It allows companies to address ERP moves, cloud initiatives, or new digital transformations without turning every change into a high-risk integration project.

This is exactly the type of problem that SoftwareOne does not solve for the first time

At SoftwareOne, we encounter integration problems repeatedly – in different countries of our CEE region, across industries and sizes of organizations. It is always a similar pattern: integrations have worked for years, no one has systematically solved them, and only a combination of deadlines, the Cloud and transformation projects revealed their true state.

The difference between integration chaos and integration as a discipline is very concrete in practice.

Adhoc Solved Integrations	Integrations solved systematically
are created after projects	They have a clear architecture
dependent on the specific ERP version	Separate from the ERP lifecycle
minimal or no monitoring	Standard monitoring and supervision
changes = high risk	changes = controlled process
S/4HANA = stress	S/4HANA = manageable project

That is why we approach integration first as a consultant and only then as a technical one. The goal is not only to replace PI/PO, but to get integrations under control so that they cease to be a risk to further development.

Typical scope with which SoftwareOne helps in practice:

• A quick and realistic overview of the integration environment that shows the true scope and risks
• design of the target integration architecture compatible with both S/4HANA and hybrid environments
• controlled migration from PI/PO to SAP Integration Suite in waves, not in one hit
• setting up security, monitoring and auditability of integrations
• defining a long-term operating and management model

As a complement to the project, SoftwareOne also uses its own tools built on SAP BTP (such as CPI Scanner), which help to automatically check the technical and security settings of integration scenarios in the SAP Integration Suite.