SAP S/4HANA Public Cloud and Private Cloud emerge as vital options when firms transition from ERP environment to cloud environment. In comparing the two deployment models, companies take into consideration factors such as cost, customization, scalability, and functionality. But there is one other factor that needs equal importance in such comparisons - security.  

Both the deployment models offer enterprise-level security but vary in aspects like control, customization, access management, security responsibilities, etc. 

What Is SAP S/4HANA Public Cloud 

SAP S/4HANA Cloud Public Edition is based on a standardized cloud ERP system. The cloud infrastructure is managed by SAP and also offers standardized functionalities. 

In terms of security, standardization may minimize the level of complexity related to infrastructure management. Nevertheless, it is the responsibility of the customer to take care of aspects like identity management, user access rights, authorizations, and data protection. 

It is important to make sure that users have access to information according to their tasks in the organization. 

What Is SAP S/4HANA Private Cloud 

SAP S/4HANA Cloud Private Edition offers more flexibility and customizations when compared to the Public Cloud option. It could work for companies that have complicated business procedures, existing SAP implementations, and high customization needs. 

The flexibility offered could also raise some security concerns. Custom roles, customizations, integrations, and developments should be managed and controlled in order to avoid access problems and security holes. 

Public Cloud vs. Private Cloud: Security Differences 

The key security difference is largely related to standardization versus flexibility. 

Public Cloud provides ease of certain security functions due to standardization, whereas Private Cloud offers control at the cost of better security governance. 

Identity, Access, and Authorization 

No matter what deployment strategy is used, identity and access management is still very important. Organizations need to ensure proper authentication, role assignment, and least privilege access. User access needs to be audited periodically. 

Additionally, SAP authorizations also need to be reviewed periodically to find out about any excessive or unneeded permissions. SoD analysis may prove to be useful in detecting any conflicting access. 

Data Protection and Compliance 

Both environments demand that businesses take steps to safeguard confidential business and personal data. The security approach must cover authorization, encryption, secure integration, monitoring, and in case required, data masking in SAP.  

Additionally, it is important for businesses to have knowledge about their joint security obligations. 

Which Is More Secure? 

Public Cloud or Private Cloud does not provide the same security in an absolute way. The Public Cloud has an advantage due to higher levels of standardization, but the Private Cloud offers more control and customization. 

In order to make the right decision, it is necessary to consider the organization's specific security needs and capabilities. 

Conclusion 

The decision-making process related to SAP S/4HANA Public Cloud and Private Cloud should include not only the evaluation of functionality and costs but also security, access governance, authorization, data protection, monitoring, and compliance factors. 

Security first is key in helping organizations to choose the most suitable deployment method based on their needs and setting up the proper controls for the protection of SAP environment. 

Read Blog : https://sapsecurityexpert.com/sap-public-cloud/s4hana-public-cloud-vs-private-cloud-a-security-centric-perspective