| SAP S/4HANA is SAP’s forward-looking ERP solution. The transition to SAP S/4HANA offers many advantages compared to earlier versions but also introduces important changes. Since companies are required to adopt SAP S/4HANA by 2027, the migration is unavoidable. It is also essential to understand the new software in depth to fully leverage its capabilities. |
SAP S/4HANA is an ERP software solution from SAP SE, available since November 2015. Unlike earlier releases such as SAP ECC, SAP S/4HANA is not an update but a completely new product line. This means that a direct one-to-one transition from the legacy system is not possible. Instead, companies must perform a full migration.
The name “SAP S/4HANA” consists of several elements that reflect specific characteristics of the solution:
• HANA: Stands for “High Performance Analytic Appliance” and refers to the underlying database.
• 4: Indicates the fourth generation of SAP products, following R/1, R/2, and R/3.
• S: Represents “Simple” or “Suite” and marks the innovation shift SAP introduced with this release.
A key characteristic of SAP S/4HANA is its use of the in-memory database SAP HANA. Traditional databases and previous SAP products typically store information on disk, allowing compatibility with databases such as Oracle or Microsoft SQL Server.
With SAP HANA, storage takes place directly in memory. This enables much faster data retrieval, shorter response times, and real-time analytics, making SAP S/4HANA a highly efficient solution.
Because SAP S/4HANA processes and analyzes data in real time, it is also referred to as a real-time ERP suite.
SAP S/4HANA supports a wide range of business functions, including:
• Sales and Marketing
• Finance
• Manufacturing
• Supply Chain
• Quality Management
• R&D and Engineering
• Human Resources
A central aspect of SAP S/4HANA is the simplified software architecture, outlined in the “Simplification List”. This SAP-provided document guides companies through the transition from SAP ERP 6.0 to SAP S/4HANA. It summarizes changes, simplifications, and innovations delivered with each new S/4HANA release. The Simplification List is updated with every version and serves as an essential reference during migration.
Key changes include:
• In-Memory Database:
SAP HANA accelerates data processing and improves system performance.
• Integration of SAP Fiori:
The user interface becomes a fundamental component of S/4HANA, enabling intuitive software interaction.
• Improved Performance:
Reduced data latency and simplified data structures increase agility and productivity.
• Advanced Analytics:
Real-time insights support fast, data-driven decision-making and predictive capabilities.
• Use of Intelligent Technologies:
Machine learning, IoT, and blockchain support process automation and secure transactions.
• Flexible Architecture:
Open APIs allow seamless integration with external systems and applications.
• Transaction Code Adjustments:
Certain transaction codes are removed or replaced in S/4HANA.
SAP S/4HANA is available as a cloud-based or on-premise solution. On-premise deployment means running the software on your own servers or outsourcing hosting to SAP or a third-party provider.
Cloud deployment options include:
• SAP S/4HANA Cloud Public Edition
A shared public cloud with a standardized version of the software. SAP manages operations and upgrades, reducing internal effort and cost. Suitable for small and mid-sized organizations.
• SAP S/4HANA Cloud Private Edition
A private cloud environment with an on-premise solution stack, operated by SAP or hyperscalers. High security, compliance, and customization options make it suitable for organizations with strict regulatory requirements.
• SAP S/4HANA On-Premise managed by SAP (HEC, HANA Enterprise Cloud)
Dedicated hardware and infrastructure managed by SAP, with customers responsible for upgrades. A Bring Your Own License model provides flexibility.
• SAP S/4HANA Any-Premise managed by a Cloud-Hyperscaler
The on-premise environment is operated by a hyperscaler rather than SAP.
SAP S/4HANA Cloud versions are more standardized, requiring less maintenance and reducing operational effort. On-premise environments increase customization flexibility but also add responsibility for system operations and maintenance. Cloud deployment aligns with Software as a Service, while on-premise reflects a Software as a Product approach.
SAP HANA processes large volumes of business data in real time. Since organizations store their critical information in SAP S/4HANA, strong data protection is essential. Key elements of HANA Security include:
Authentication and User Management
User authentication can be handled through methods such as SAML or JWT. Roles and access rights are managed through Identity and Access Management.
Authorization
Authorization checks control access to databases when users interact with client interfaces. Access is granted or denied based on assigned roles and permissions.
Encryption
To maintain performance, in-memory data is not encrypted by default. Encryption can be enabled for data in transit via TLS and for data at rest.
Data Masking
Visibility of sensitive data can be restricted through masking rules defined within the authorization model.
Data Anonymization
Sensitive information can be aggregated for statistical use so that original values and context cannot be identified.
Logging
All changes and access activities are recorded for monitoring and analysis of potential security issues.
The SAP S/4HANA transformation refers to the transition from legacy SAP ERP systems to SAP S/4HANA. All SAP customers must complete this shift by December 2027. The migration involves technical conversion, data transfer, and the redesign of roles and authorizations.
Common migration approaches include:
• Greenfield: A completely new SAP S/4HANA implementation, ideal for organizations starting fresh or moving from a non-SAP system.
• Brownfield: A direct system conversion from an existing ERP system. This approach is faster but may carry forward outdated structures.
• Bluefield: A hybrid model combining selective data and process migration.
Xiting supports your S/4HANA transformation with the Xiting Authorization Management Suite (XAMS), enabling a faster and more controlled migration.
A migration to SAP S/4HANA is necessary because SAP will end support for older ERP systems in 2027. Beyond that deadline, S/4HANA provides clear technical and functional advantages over legacy ERP environments.
Key benefits of SAP S/4HANA include:
• Faster data processing through real-time analytics
• More efficient business processes
• Access to new technologies such as AI, IoT, and blockchain
• A modern, intuitive user interface
SAP S/4HANA runs on the in-memory SAP HANA database, which significantly accelerates data processing and analysis. It also introduces a simplified data model, the SAP Fiori user interface, and a broad range of new functions and innovations.
Fiori apps support key functions within S/4HANA. They fall into three categories:
• Transactional apps: Support execution of business processes such as creating purchase orders.
• Analytical apps: Provide real-time insights and visual dashboards, for example sales performance at a given time.
• Fact Sheet apps: Offer detailed information about objects such as orders and include drilldown options for additional context.
