The greenfield, brownfield, and selective transition choice, the Full Use Equivalent metric, RISE against public cloud against on premise, the competitive ERP benchmark, and the contract terms that protect the saving.
A working guide for CIOs, CFOs, and procurement leaders running an SAP S/4HANA migration: the greenfield, brownfield, and selective transition choice, the Full Use Equivalent metric, RISE against public cloud against on premise, the competitive ERP benchmark, and the contract terms that protect you. Typical recovery is 15 to 32 percent against SAP's opening proposal.
The move to S/4HANA is the biggest commercial event most SAP customers will face this decade. It converts a paid up ECC estate into an S/4HANA subscription, and SAP uses the 2027 support deadline to push you toward its preferred path.
SAP's default proposal frames RISE as the only route and the deadline as the reason to sign now. That compresses your time to model the alternatives, which is exactly where buyers lose leverage.
This guide sets out six buyer side moves: choosing the migration path, auditing the Full Use Equivalent conversion, comparing RISE against public cloud against on premise, benchmarking against rival ERPs, and locking the right contract terms, all staged against the 2027 deadline. Read the related SAP services practice, the SAP knowledge hub, the SAP RISE negotiation, the SAP HANA Cloud negotiation, the SAP S/4HANA deployment models, the SAP contract negotiation fundamentals, the SAP RISE TCO calculator, and the multi vendor negotiation scorecard.
SAP launched S/4HANA in 2015 as its next generation ERP on the HANA in memory database with the Fiori interface. It now comes in three deployment models: Cloud public edition, Cloud private edition under RISE, and on premise.
The numbers are large. A mid market migration often runs 15 to 40 million dollars over the term, with a 3 to 10 million dollar annual subscription. A large global migration can exceed 100 million dollars, with a 10 to 40 million dollar annual subscription.
The pressure point is the deadline. SAP ends standard ECC support on December 31, 2027, with extended maintenance available to 2030 at a premium. SAP's account team uses 2027 as its main lever; the buyer side answer weighs it against extended maintenance and third party support.
The competitive field also matters. Oracle Fusion ERP, Microsoft Dynamics 365, Workday Financials, and Infor CloudSuite all give buyers credible alternatives, especially where the workload does not need SAP specific capability. Read the SAP RISE negotiation.
Three paths exist, and the choice drives both cost and risk. Model all three against your actual operations before SAP frames the decision for you.
A clean reimplementation on standard S/4HANA. It removes legacy customisation and technical debt, but it is the highest effort and change management load.
A technical conversion of the existing ECC system to S/4HANA. Lower disruption and faster, but it carries forward custom code and old design decisions.
A hybrid that moves chosen processes and data into a new system. It balances cost and clean up, but it needs careful scoping and specialist tooling.
The path you choose changes the licensing conversion, the implementation cost, and your negotiating timeline. Decide it on your terms, with scenario models, rather than accepting SAP's default.
S/4HANA and RISE price against the Full Use Equivalent, or FUE, metric. SAP maps your old named user and engine licenses into FUE units, and the mapping is where overcounting hides.
FUE bundles user types into a single unit, with different consumption ratios for professional, functional, and productivity users. Small ratio changes move the total materially.
Before any conversion, reconcile your ECC entitlement against actual use. Inactive accounts, duplicate users, and shelfware all inflate the FUE baseline SAP starts from.
The conversion from your perpetual estate into FUE is negotiable. Push back on the user classification and the ratios, since this is one of the largest levers on the subscription.
Do not pay to convert licenses you no longer use. Retire shelfware before the FUE baseline is set, not after.
The deployment model changes both economics and control. Compare all three rather than accepting RISE as the default.
RISE bundles S/4HANA private edition, hyperscaler infrastructure, and managed operations into one subscription. It is convenient, but the bundle makes price benchmarking harder and locks several decisions together.
A standardised multi tenant SaaS. Lower cost and faster to adopt, but less room for customisation, so it suits simpler or greenfield estates.
You run the software, often on your own cloud accounts. The most control and the strongest benchmarking position, with the most operational responsibility.
Model the three side by side and keep them in play through the negotiation. A credible on premise or public edition alternative is what disciplines the RISE price.
A credible competitive alternative is the strongest source of leverage in any ERP negotiation. Build the benchmark even if you intend to stay on SAP.
A full cloud ERP suite on Oracle Cloud Infrastructure, the most direct enterprise alternative to S/4HANA.
Finance and Supply Chain on Azure, with Power Platform integration, strong in Microsoft heavy estates.
Cloud financial management, strong where it pairs with Workday human capital management.
Industry specific cloud ERP, competitive in manufacturing, distribution, and healthcare.
Changing ERP is expensive and slow, so most buyers stay. The value of the benchmark is the leverage it creates on SAP's price, not the switch itself.
The migration saving only holds if the contract protects it. Five terms matter most.
Define exactly what is included in the migration and subscription, so scope does not expand into cost later.
Cap the annual increase across the term in writing, rather than relying on goodwill at renewal.
Secure the right to reduce FUE quantities as your estate changes, so you are not locked into a peak number.
Keep the right to move between deployment models without a punitive repurchase.
Stage the migration to your readiness, using extended maintenance or third party support as a backstop, so the deadline does not force a rushed signature.
The same avoidable mistakes recur in S/4HANA migrations:
Standard ECC support ends on December 31, 2027, with extended maintenance available to 2030 at a premium. Third party support can extend the perpetual estate beyond that, so the deadline is a planning point, not a forced signature.
FUE is the licensing unit for S/4HANA and RISE. SAP maps your old user and engine licenses into FUE units using consumption ratios, and that mapping is negotiable and worth auditing closely.
Greenfield is a clean reimplementation, brownfield is a technical conversion of the existing system, and selective transition moves chosen processes and data into a new system. Each carries different cost, risk, and licensing impact.
It depends on how much control and customisation you need. RISE bundles software, infrastructure, and operations; public edition is cheaper but more standardised; on premise gives the most control and the strongest benchmarking position.
Most enterprises recover 15 to 32 percent against SAP's opening proposal. The saving comes from the FUE audit, shelfware reduction, a credible competitive benchmark, and disciplined contract terms.
Because the leverage is in the alternative, not the switch. A credible Oracle, Microsoft, Workday, or Infor option is what gives you room to negotiate the SAP price.
The practice runs four engagement models against the S/4HANA migration cycle.
Read the related SAP RISE negotiation, the SAP HANA Cloud negotiation, the SAP S/4HANA deployment models, the SAP contract negotiation fundamentals, the SAP services practice, the SAP knowledge hub, the SAP RISE TCO calculator, the multi vendor negotiation scorecard, the software spend health check, and the complete white paper library.
The companion guide to the RISE conversion: the perpetual to subscription move, the Full Use Equivalent metric, the embedded support and infrastructure economics, and a staged posture against the SAP commercial cycle.
Used across more than five hundred enterprise software engagements. Independent. Buyer side. Built for chief information officers running the SAP RISE conversion and the broader SAP commercial framework.
The SAP account team framed the SAP RISE move as inevitable against the 2027 deadline. Redress ran the Full Use Equivalent audit, the Oracle Fusion ERP benchmark, and the deployment model scenario modeling. Twenty six percent off the opening migration proposal at signature.
