SAP Deployment Landscape: On-Premise, Private Cloud, Public Cloud, and RISE — Which Path Is Right?
The deployment decision nobody is framing correctly — and why it matters more than your migration approach
The Deployment Decision That Shapes Everything
Before choosing Brownfield, Greenfield, or Bluefield, enterprises must answer a more fundamental question: where will your S/4HANA run? The deployment model determines your customization freedom, cost structure, upgrade cycle, extension architecture, and operational responsibility.
SAP now offers four deployment models — each with different trade-offs. The decision is not purely technical; it has profound implications for your IT operating model, vendor relationship, and long-term flexibility.
S/4HANA On-Premise
- Complete control over infrastructure, upgrades, and customization
- ABAP stack fully accessible — unrestricted custom development
- You manage hardware, OS, database, and SAP Basis operations
- Perpetual license model — capex-heavy, predictable long-term
- Upgrade on your schedule (or not at all)
RISE with SAP — Private Cloud Edition
- SAP manages infrastructure and technical operations
- Your dedicated S/4HANA instance — not multi-tenant
- Customization allowed but governed by clean core principles
- Subscription model (opex) — includes infrastructure + license + operations
- SAP-controlled upgrade cycles (typically 2x per year)
- BTP included for side-by-side extensions
GROW with SAP — Public Cloud
- Multi-tenant S/4HANA — SAP manages everything
- Standard processes only — no custom ABAP, no Z-code
- Quarterly automatic upgrades — you cannot skip or defer
- Lowest entry cost — subscription includes everything
- Extensions via BTP only (key-user tools + side-by-side)
- Mandates Greenfield implementation — no Brownfield conversion possible
Hybrid / Multi-Deployment
- Core S/4HANA on RISE (Private Cloud) for headquarters
- GROW (Public Cloud) for smaller subsidiaries or new entities
- On-premise for specific regulated business units
- Cross-deployment orchestration via BTP or iHub
- Requires robust integration strategy across deployment boundaries
Deployment Model Comparison
| Dimension | On-Premise | RISE (Private Cloud) | GROW (Public Cloud) |
|---|---|---|---|
| Customization | Unlimited | Governed (clean core) | None (standard only) |
| Cost Model | Capex + opex | Subscription (opex) | Subscription (lowest) |
| Upgrade Control | You decide | SAP-managed (2x/year) | Quarterly automatic |
| Infrastructure | You manage | SAP manages | SAP manages (shared) |
| Migration Path | Brownfield/Greenfield/Bluefield | Brownfield/Greenfield | Greenfield only |
| Extension Platform | ABAP + BTP | BTP (primary) | BTP (mandatory) |
| Data Sovereignty | Full control | Region-locked | Region-locked |
Where Voltus AI Agents Fit: Deployment-Agnostic Intelligence
Regardless of your deployment choice, the migration challenges remain the same: custom code remediation, data cleansing, integration re-platforming, and testing. Voltus AI Agents operate at the application layer, not the infrastructure layer — making them deployment-agnostic.
This deployment-agnostic architecture is particularly valuable for hybrid scenarios where different business units run on different deployment models. iHub becomes the cross-deployment orchestration layer that BTP alone cannot fully provide — because iHub connects SAP to the non-SAP systems (banks, freight, trade finance) that BTP does not natively reach.
Part 4: SAP Deployment Models (You are here)
Part 5: Choosing Your Migration Path
Part 6: SAP Test Assurance with SATIP
Whatever deployment model you choose, Voltus AI Agents accelerate the migration. Schedule an assessment to see how.