SAP S/4HANA migration, set to replace SAP ECC by 2027, offers organizations a chance to transform their integrations through modern architectures and APIs while navigating challenges like legacy systems and process redesign.
Enterprise Resource Planning (ERP) processes lie at the heart of any enterprise. They run and manage some of core business requirements in multiple domains like finance, logistics, sales etc. Among the ERP solutions available in the market, SAP is the most commonly used solution by enterprises. Being at the core of business processes also means that almost every system or application needs to interact with SAP, making SAP integration a key enabler for enterprises.
SAP S/4HANA was launched in 2015 as successor to the well established SAP ECC product. SAP has decided to retire SAP ECC by 2027 with extended support until 2030, thereby making the migration to S/4HANA mandatory for every organization by or before that time.
Business requirements and challenges of SAP S/4HANA migration
The business expects to have a streamlined core business process that spans across the length and breadth of an enterprise. Easy and timely access to trusted data is becoming critical for businesses to make decisions. With changing dynamics, agility is demanded from processes and systems along with improved connectivity.
SAP S/4HANA addresses a lot of these requirements with features such as enhanced performance, simplified data models, new integration options, and more, making migration a solid choice. But given how central and business critical the whole SAP landscape is, migration comes with challenges, especially in the area of integration. These include:
- Avoiding business disruptions for critical processes key to operations and customer service
- Redesigning and rebuilding broken integrations due to change in processes, data models, etc.
- Addressing legacy point to point integrations and other home grown solutions
- Simplifying high degree of existing customization in processes and data models
- Modernizing integration options to APIs and Events
- Handling data migrations from existing to newer SAP S/4HANA instances
- Harmonizing and consolidating multiple SAP ECC instances running across the globe with localized processes
- Developing a phased migration strategy with integrations involving the simultaneous operation of SAP ECC and SAP S/4HANA systems in parallel
SAP S/4HANA migration: Migrate or transform
With great challenges come great opportunities. The SAP S/4HANA migration offers exciting potential for organizations to pause and plan the program for an actual transformation. Some considerations should be:
- Reducing customization in processes and integrations and years of technical debt with initiatives like SAP S/4HANA Clean CORE Strategy
- Transforming SAP S/4HANA integration by ditching RFC communications in favor of modern and composable APIs and Events
- Pivoting toward consumer-led integration solution rather than produce and distribute data approach
- Leveraging industry standard data models for quick adoption
- Developing a hybrid integration landscape leveraging best features from different products
All this requires thinking outside the box, carefully weighing available options and taking bold decisions to reform and refactor existing processes and integrations to make an impactful transformation.
Build a composable architecture using SAP S/4HANA APIs and MuleSoft
Similar to standard BAPIs and IDOCs, SAP S/4HANA comes packaged with a host of SOAP and ODATA APIs targeting different domains and processes. When combined with layered API architecture, i.e. composable API design, MuleSoft can transform your SAP integration landscape to a highly reusable application network.
Every API will act as a composable module offering maximum reusability and transparent ownership. Rather than migrating in “lift and shift” fashion, you rearchitect your integrations from top to bottom in a layered approach. This layered API approach will deliver the agility and flexibility required by business.
- Design APIs as intelligent building blocks: Each API is designed to be a self-contained business functionality that can be used in multiple contexts.
- Reuse APIs: Organizations can reduce redundancy and accelerate development by treating APIs as reusable components.
- Make changes: Composable APIs make it easier to modify or replace parts of the system without affecting the whole.
- AI and automation-ready: Build AI ready APIs for seamless context transitions, data analysis and enable agent actions across the landscape
With MuleSoft’s API Management capabilities, you can effectively design, secure, govern and most importantly monitor your integrations in a reliable and scalable fashion. Anypoint Exchange provides you the capability of cataloguing all your SAP S/4HANA and other APIs at one single place making them easily discoverable and as a result reusable.
Hybrid integration model
Integration needs vary across organizations. A hybrid approach, combining MuleSoft with SAP native integration tools, ensures that each scenario leverages the most suitable solution. A well-defined decision matrix, guided by agreed-upon principles that balance risk and future-proofing, enables effective decision-making – helping determine when to re-architect and when a Lift & Shift approach is more appropriate.
SAP S/4 HANA, combined with SAP Business Technology Platform (BTP), offers pre-packaged integration scenarios that help program teams avoid unnecessary customization and speed up implementation. These ready-made solutions eliminate the need to reinvent the wheel, allowing businesses to focus on innovation rather than integration complexities.
Similarly, MuleSoft’s Accelerator for SAP provides essential building blocks and pre-configured mappings, making SAP to non-SAP integrations faster and more efficient. By leveraging these foundational assets, organizations can significantly reduce development time and ensure smoother data flows across their enterprise systems.
For event-driven architectures, SAP Event Mesh and Advanced Event Mesh enable real-time, reusable event subscriptions. This allows applications to seamlessly receive updates from SAP S/4 HANA, fostering agility and responsiveness across business operations.
Additionally, EDI integrations remain a cornerstone for critical supplier and customer interactions. Fully managed B2B service providers help streamline these transactions, ensuring compliance, security, and efficiency in business-to-business communications.
With the advent of AI-powered customer service agents like Salesforce Agentforce, MuleSoft connectors for Salesforce clouds offer seamless transition of contexts and actions to SAP S/4 HANA (and vice-versa), transforming how your business interacts with and delight its customers.
By adopting a hybrid and coexisting integration model for SAP S/4HANA, enterprises can harness the best available features and frameworks to drive efficiency, streamline operations, and enhance both business performance and customer satisfaction.
Rethinking the delivery operating model
A successful migration isn’t just about technology – it’s about aligning people, processes, and tools. Organizations must adopt a consumer-led integration approach that prioritizes discoverability and reuse of APIs through platforms like MuleSoft’s Anypoint Exchange. This shift reduces duplication while empowering teams with clear ownership and governance of integrations.
MuleSoft Professional Services methodology and assets
MuleSoft Professional Services offers a highly experienced team of advisors, architects, and consultants ready to support you in your SAP S/4HANA migration program with clear goals and objectives.
- Align on outcomes: Align on migration priorities and end-states for faster execution, addressing immediate migration needs while paving the way for future strategic initiatives
- Build a path to business value: Create and align on a seamless migration path with minimal disruption, prioritized for accelerated value realization
- Lead through execution mastery: Create a composable architecture, driving phased services migration while empowering your team through essential trainings and enablement
Our approach is divided into three execution phases, supporting you from the beginning and delivering solutions aligned to your Center for Enablement.
Along our journey with valued customers and partners, we have built a wealth of assets to help you at every stage of your program. Be it decision tree to help evaluate and decide on transformation path for your integrations or domain driven design workshops for designing API-led architecture and technical migration strategy outlining the migration path, we have you covered.
MuleSoft Professional Services as your trusted partner in SAP S/4HANA integration transformation
SAP S/4HANA migration is a perfect opportunity for every organization to re-evaluate their SAP integrations and transform them into a more composable design adjusting to the changing business requirements. Our comprehensive approach, composable architecture methodology and proven assets makes MuleSoft Professional Services a trusted partner in this journey to help you modernize your SAP S/4HANA integration landscape.
