The four paths off SAP ECC, and what each one demands of your data

Not every company is taking the same road off ECC. There are four, and they price, schedule, and carry risk very differently. The one thing they share is the data work underneath.

Ask ten companies on ECC what they are doing about 2027 and you will get four different answers. The market is splitting into distinct routes, and the route changes the cost, the schedule, and the risk. What does not change is the work underneath all of them: the legacy data has to be extracted, cleaned, and mapped before any of these paths lands.

• Dec 31, 2027 ECC 6 mainstream maintenance ends. Paid extended maintenance runs to 2030 at roughly two extra points of fee. Older ECC releases already lost mainstream support in 2025. The date is a planning input, not a cliff.

Path 1: RISE with SAP and S/4HANA Cloud

The core path, and where most of the installed base is heading. SAP is pushing customers off on-premises setups and into a managed-cloud subscription called RISE with SAP. It comes in two flavors. Public Cloud is standardized software as a service that allows almost no custom code. Private Cloud is a customized environment on a hyperscaler such as AWS, Azure, or Google Cloud, which is where complex pharma, energy, and manufacturing operators go to keep their regulated workflows.

Path 2: Leaving SAP for a rival

A segment of mid-market companies is using the deadline as the reason to exit SAP entirely. They move to Microsoft Dynamics 365 if they live in the Microsoft world, or to Oracle Cloud ERP and NetSuite for finance depth or rapid deployment. The platform is new. The fifteen years of data that has to come with them is not.

The three ways off ECC, costed

Ranges, not quotes. Your number moves with data volume, custom code, and how clean the data is going in.

Source: Aggregated 2026 SAP migration cost guidance (Tachyon, Hexaware, SAP Licensing Experts).

Path 3: Selective Data Transition, the hybrid route

Companies that waited until 2026 are running out of runway for a full rebuild, which can take up to two years. So they build a clean S/4HANA core and migrate only the active data, leaving the legacy archive behind. This is the most data-intensive path of the four, which is exactly why it suits a focused data pod.

Path 4: Holding on ECC with third-party maintenance

Some companies will not move in time, by choice or by constraint. They drop SAP support and shift to a third-party maintenance provider that keeps the legacy system patched past 2027. It buys time. It does not clean the data, and the debt compounds until the migration finally happens.

• 40% of the migration timeline is discovery and data cleansing. Pre-move cleansing with validation rules cuts post-migration defects by about 60% and post-go-live performance issues by about 25%. The work you skip up front returns as production incidents.

The one thing all four share

Re-platform to S/4HANA Cloud, jump to Dynamics, run a hybrid transition, or buy time on ECC: the core problem is identical. You must extract, clean, and map complex legacy enterprise data. That is the work that decides the outcome, and it is the work we own. Don't move the mess. Clean it first.

Frequently asked questions

What are the four paths off SAP ECC?

Move to S/4HANA Cloud through RISE with SAP, leave SAP for a rival ERP such as Microsoft Dynamics or Oracle, run a Selective Data Transition that moves only active data to a clean core, or hold on ECC with third-party maintenance past 2027. Each prices and schedules differently.

Which path is most common?

Most companies stay in the SAP ecosystem and move to S/4HANA, increasingly through RISE with SAP. A smaller but real share leave for a rival or hold on ECC with third-party support, and the late movers tend toward a Selective Data Transition because a full rebuild no longer fits the calendar.

Which path is fastest?

A Selective Data Transition is usually faster than a full greenfield rebuild because you move only the active data and leave the legacy archive behind. Speed depends far more on how clean the moving data is than on the path itself.

Do all four paths need data cleansing?

Yes. Whether you re-platform to S/4HANA, jump to Dynamics or Oracle, run a hybrid transition, or buy time on ECC, the legacy data still has to be extracted, cleaned, and mapped. The path changes the destination, not the condition of the data.

What about companies that miss the 2027 deadline?

Industry analysis suggests up to half of ECC customers may intentionally miss 2027, moving to third-party maintenance to keep legacy systems patched. That defers the migration, it does not retire the data debt, which keeps growing until the move happens.

How do we choose a path?

Start from how much of your current process and history is worth keeping, your regulatory needs, and your timeline. A readiness assessment measures the real condition of your data and code first, so the path is chosen on evidence rather than on a vendor pitch.