The software landscape is shifting fast as more companies move to the cloud. In 2021, 70% of firms were satisfied with their in-house systems. By 2024, that number had fallen to just 38%.
A big part of this shift comes down to one choice: should you run SAP S/4HANA in the SAP public cloud or keep it in a private setup?
This decision also links to SAP Landscape Transformation, as organisations consider modernising processes and integrating with legacy SAP ERP systems.
ECC support ends in 2027, so waiting is not realistic. The decision you make now will guide how the business grows, how daily work becomes simpler, and whether it keeps up with the competition.
Understanding SAP Public Cloud
SAP S/4HANA Public Cloud is a shared SaaS service. It’s built for organisations that want things fast, simple, and standardised. It enables a greenfield installation methodology, allowing firms to adopt industry standards without requiring historical customisations. This approach supports SAP Landscape Transformation by helping companies move efficiently from legacy ERP to cloud environments. With that timeline in mind, it’s essential to understand SAP Public Cloud and Private Cloud thoroughly, so your Australian enterprises can choose the edition that aligns with your business goals.Understanding SAP Private Cloud
SAP S/4HANA Private Cloud is configured for a single tenant. It allows customisation and regular core updates. This makes it useful for companies with complex or industry-specific needs. SAP manages the system, but clients can still choose their preferred cloud provider. It is beneficial for Digital Transformation S/4HANA projects, where bespoke processes and governance are critical. Want to know more? We will explore the distinctions between public and private clouds in the next section.SAP Public Cloud vs Private Cloud
Here’s a quick comparison of SAP Public Cloud and Private Cloud across key features and capabilities:| Feature | SAP Public Cloud | SAP Private Cloud |
| Deployment Model | Multi-tenant SaaS | Single-tenant private environment |
| Infrastructure Control | Fully controlled by SAP | Partially controlled by SAP |
| Customisation Level | Limited Modifications | Unlimited Modifications |
| Security Responsibility | Standard SAP Security | Flexible SAP Security |
| Implementation Strategy | Greenfield alone | Brownfield, Selective or ECC Migration to S/4 |
| Pricing Plan | User based | Subscription based |
| Industry Coverage | It is now accessible to more than 55 countries and supports 33 languages. | 25 industries, 64 countries |
| Scalability | Very adaptable | Needs infrastructure development |
| Security & Compliance | SAP manages security and compliance, following standardised best practices. Suitable for organisations with minimal in-house capability. It may be less adequate for highly regulated industries. | Customers bear full responsibility for security and compliance, requiring higher investment in security assets. Offers flexibility to customise compliance models and retain complete control over data governance. Ideal for highly regulated industries. |
| Performance & Scalability | SAP-tuned performance with elastic, on-demand resource provisioning. Scales automatically for varying workloads. | Performance is tailored to the organisation’s infrastructure. Scaling is possible but requires technical planning and manual adjustments. |
| Cost & ROI | Lower capital expenditure with predictable costs. Cost-effective for organisations with variable workloads. | Higher initial investment, but it can deliver better long-term value for steady operations. |
| Industry Trends & Adoption | Fast embrace by growth-stage and mid-market firms, increasing adoption due to embedded AI, intelligent automation, and innovation delivery without complexity. | Traditionally, higher adoption is due to flexibility. Slower uptake compared to Public Cloud, but still preferred where custom infrastructure and regulatory control are needed. |
| Innovation & Roadmap | Includes SAP’s Public Cloud innovations like industry-specific flavours and GenAI capabilities. Enterprises can access new features quickly. | Innovation depends on internal IT capabilities; updates and new features may require more planning and effort. |
Which Edition Works Best For Businesses in Australia?
Beyond features, different business profiles suit different editions. Let’s explore which type of cloud works best depending on your Australian organisation’s size, industry, and operational needs. Following is a comparison of recommendation summaries:| Business Profile | Recommended Edition | Reason |
| Mid-market / greenfield | Public Cloud | Immediate ROI, minimal TCO, and little infrastructure footprint. |
| Strongly governed industries | Private Cloud | Comprehensive oversight, regulatory customisation, and performance tracking. |
| Personalized-process firms | Private Cloud | Complete integration possibilities, custom modules. |
| Periodic/Unstable demand | Public Cloud | Dynamic growth and cost-efficient flexibility. |
| Steady workload, Expense-focused | Public Cloud | Predictable CAPEX may be more economical in the long run. |
| Visionary enterprises | Public Cloud | Constant updates with AI and analytics capabilities. |
How to Choose the Right Cloud for Your SAP Environment?
For Australian businesses, selecting between SAP Public Cloud and Private Cloud depends on matching the solution to your company’s specific needs across five critical dimensions. Let’s look at this below:| Opt for SAP Public Cloud if | Opt for SAP Private Cloud if |
| Your organisation prioritises quick adoption and standardised processes. | You need substantial personalisation and authority over your ERP system. |
| You favour SAP for infrastructure management and security. | Your sector requires special compliance and safety protocols for the ERP system. |
| Your business has rather conventional procedures. | You have considerable current SAP expenditures to preserve. |
| You believe that with limiting customisation possibilities have higher level of benefits with best practices. | You must integrate with complicated third-party systems and partner add-ons. |
Conclusion
There isn’t a single way to adopt SAP S/4HANA Cloud. Whether you go Public or Private Cloud changes how flexible, costly, innovative, and controlled your setup will be. For quicker deployment, lower ownership costs, regular updates, and faster access to features like AI and automation, the SAP Public Cloud often works well. If your Australian enterprise demands complete customisation, robust governance, and tighter integration with existing systems, the Private Cloud is the best fit. And for companies aiming to GROW with SAP, a hybrid path through RISE can offer both flexibility and control. Whether updating SAP ERP or moving fully to the cloud, this choice sets the stage for a successful digital strategy.Frequently asked questions
1. Why is 2027 a critical deadline for SAP ECC users?
The year 2027 marks the end of mainstream support for SAP ECC. After this date, mainstream maintenance for SAP ECC is scheduled to end in 2027, meaning customers will no longer receive standard updates under mainstream support conditions. Waiting until the last minute is considered a high-risk strategy due to the likely surge in demand for implementation partners and the complexity involved in a cloud transition.
2. What is the primary difference between SAP Public and Private Cloud?
The fundamental difference lies in the deployment environment:
- SAP Public Cloud is a multi-tenant SaaS environment managed by SAP, designed around standardised processes and frequent release cycles.
- SAP Private Cloud provides a dedicated environment with broader configuration options and more flexibility in scheduling upgrades within SAP’s supported maintenance windows.
3. Which cloud edition is best for a “Greenfield” implementation?
The SAP Public Cloud is often considered suitable for greenfield projects that aim to adopt standardised processes from the outset.
4. Can I keep my existing customisations if I move to the cloud?
Yes, but primarily in the Private Cloud. While the Public Cloud requires you to follow standard processes with limited modifications, the Private Cloud supports broader extensibility and adaptation options than Public Cloud, though SAP generally recommends avoiding classic modifications where possible. This is essential for companies with highly bespoke or industry-specific processes that cannot be found in a standard SaaS package.
5. How does security responsibility differ between the two models?
- Public Cloud: SAP manages most technical security aspects, while customers handle role and access governance within the application.
- Private Cloud: SAP manages the infrastructure, while customers have more control over security configurations and governance models, depending on their requirements.
6. What is “SAP Landscape Transformation,” and why does it matter?
SAP Landscape Transformation is a strategy for modernising and consolidating legacy systems into a single, streamlined S/4HANA environment. It refers to approaches for consolidating or modernising SAP system landscapes during a transition to S/4HANA, particularly useful for organisations with multiple or highly customised systems.
7. How should an Australian enterprise choose between Public and Private?
Key considerations include:
- Adoption speed vs configuration flexibility — Public Cloud emphasises rapid deployment, while Private Cloud provides more flexibility.
- Standard vs specialised processes — Public Cloud aligns with predefined best‑practice processes; Private Cloud allows more adaptation.
- Use of existing investments — Private Cloud can accommodate certain existing SAP configurations, whereas Public Cloud typically suits organisations ready to adopt a more standardised approach.
Benjamin Ng
Benjamin Ng leads B2B marketing at cbs consulting, working across Asia Pacific to help organisations translate strategy into measurable business impact. He is passionate about creative content and the role of technology—particularly SAP S/4HANA—in improving productivity and enabling transformation.
