Connecting SAP to another application can take days or weeks. Living with that integration can take years.
An enterprise integration landscape can include SAP S/4HANA, EWM, TM, BTP, MES, PLM, WMS, TMS, CRM, E-commerce, banking platforms, tax systems, carrier platforms, legacy ERP, and external customer and supplier systems. Each interface creates a technical dependency that needs clear ownership, security controls, monitoring, and a defined approach to future changes.
That makes partner selection an architectural decision. The partner can determine how APIs are designed, where middleware runs, how data moves between systems, and how integration failures are detected and resolved. A low project price can become expensive when interfaces require frequent manual intervention or make future system changes harder.
In this guide, we will talk about how to choose an SAP integration partner in the USA by evaluating integration requirements, SAP expertise, architecture capability, SAP Integration Suite expertise, security, delivery, support, total cost, and other factors.
Before comparing SAP integration partners, define what needs to connect and what each connection must support. Map SAP systems, non-SAP applications, legacy platforms, cloud services, external networks, and existing middleware.
Then document the requirements that affect architecture. Consider data volume, processing frequency, latency, availability, security, and business impact. An inventory update for a warehouse may require near-real-time processing, while a financial report may run as a scheduled batch.
S/4HANA migration adds another layer. Some existing interfaces may depend on ECC data structures, custom code, or legacy middleware and require redesign.
Questions to ask the partner:
General experience with integration does not show experience with SAP specific processes and technologies. Evaluate the partner’s hands-on experience with SAP products in the target landscape, for example S/4HANA, ECC, SAP BTP, SAP Integration Suite, EWM, TM, Ariba, SuccessFactors, SAP Business Network.
Certifications provide useful background. Project evidence matters more. Ask for examples of similar SAP-to-SAP, SAP-to-non-SAP, cloud, legacy and B2B integrations in the target environment.
Also see how the partner manages SAP upgrades and application changes. Interfaces can be API specific, data structure specific, and business process specific.
Important questions to ask the partner:
A partner should explain how the integration landscape will work as a whole. This includes where integration logic resides, how systems exchange data, and how interfaces will be secured, monitored, and maintained.
Different requirements call for different patterns. APIs can support application-to-application communication. Events can distribute business events to multiple consumers. Middleware can handle routing and transformation. EDI can support structured B2B transactions. Point-to-point connections may also fit limited, stable use cases.
The choice should reflect latency, volume, reliability, security, data ownership, and expected change. The partner should also define interface ownership, error handling, monitoring, API lifecycle management, and governance.
Questions to ask the partner:
SAP Integration Suite experience should go beyond familiarity with the product. The partner should know which capabilities fit specific integration requirements and how they operate within the wider architecture.
Relevant capabilities are Cloud Integration for application and process integration, API Management for exposing and governing APIs, Event Mesh for event-driven scenarios, Open Connectors for selected third-party applications, and Integration Advisor for B2B integration design.
The evaluation should cover the operational model as well. Monitoring, error handling, API governance, reusable integration content, and transport between environments all affect long-term maintenance.
Questions to ask the partner:
Non-SAP systems are still a part of most enterprise SAP landscapes. The partner must have experience integrating S/4HANA with applications using various APIs, data models, protocols and release cycles.
Examples include Salesforce, Microsoft Dynamics, Oracle apps, Workday, Manhattan, Blue Yonder, MES and PLM platforms, E-commerce systems, banks, carriers, and legacy applications. It's less about the systems themselves than the partner's ability to use technologies it does not own.
This becomes especially relevant in multi-vendor environments, acquisitions, and landscapes where external providers own critical applications. The partner must account for external API limitations, data contracts, authentication requirements, version changes, and coordination between system owners.
Important questions to ask the partner:
Industry experience can reduce integration design gaps because business processes determine what data must move, when it must move, and how failures affect operations.
A manufacturing integration may connect S/4HANA with MES, PLM, and EWM to coordinate production, product data, and warehouse activity. A logistics landscape may connect S/4HANA, EWM, TM, and carrier platforms. Retail environments can link S/4HANA with order management, E-commerce, and WMS. Life sciences projects may involve quality, manufacturing, and regulatory systems.
The partner should understand these process dependencies and the business consequences of integration failures. A technically valid interface can still create operational problems when it handles the wrong data, timing, or ownership model.
Questions to ask the partner:
Supply chain integrations should be evaluated as end-to-end business flows. This is especially relevant for US manufacturers, distributors, and logistics providers operating complex warehouse and transportation networks.
For example, a customer order may trigger processes across SAP S/4HANA, EWM, warehouse automation, TM, carrier platforms, and customer-facing systems. Each system depends on accurate and timely information from the others. A partner should understand how failures or delays at one point affect the wider process.
Look for experience with SAP EWM, TM, and IBP, as well as third-party WMS, WES, WCS, MES, automation systems, and carrier networks. Technical experience alone may not cover the process dependencies involved in warehouse and transportation operations.
What questions to ask the partner:
Different integration requirements call for different communication patterns. The partner should understand when to use an API, asynchronous message, event, batch process, or EDI transaction.
REST and OData APIs often support request-response interactions where one application needs information from another. Event-driven integration can distribute business events to several systems. Queues and asynchronous messaging can help decouple systems and manage temporary outages. Batch processing remains suitable for scheduled or high-volume scenarios without real-time requirements. EDI continues to support transactions with many suppliers, retailers, carriers, and logistics partners.
The partner should select the pattern based on the process, data volume, timing, and failure requirements. A request for real-time communication does not automatically mean that synchronous communication is the right technical approach.
Questions to ask the partner:
Integration debt often develops when new applications receive direct connections to every system they need to communicate with. A growing landscape can then produce a large number of interfaces with duplicated mappings, inconsistent error handling, and unclear ownership.
The partner should show how the architecture will support future systems and integrations. Depending on the environment, this may include reusable APIs, integration templates, canonical data models, common mappings, and governance standards. Documentation and interface ownership should also remain current as systems and processes change.
The goal is to prevent each new integration from introducing another isolated design.
Questions to ask the partner:
Many integration failures originate in data rather than connectivity. An interface may transfer data successfully while downstream processes still fail because systems use different identifiers, formats, ownership rules, or update sequences.
The partner should understand how key business objects move across the landscape, including business partners, materials, products, locations, customers, suppliers, inventory, orders, and transportation data. Each critical object requires a defined system of record and rules for creation, updates, synchronization, and error resolution.
The partner should also explain how duplicate records and conflicting updates will be handled. For example, two systems updating the same customer or product record without clear ownership can create inconsistent data across connected applications.
Questions to ask the partner:
The security of the integration is dependent on the data, systems and external parties involved. The partner should be able to explain how authentication, authorisation, encryption, certificates, API security, credential storage, secrets management and privileged access will be addressed across the integration landscape.
The approach should also reflect enterprise-specific requirements. These may come from customer contracts, industry regulations, internal security policies, or sector-specific controls. Organizations in aerospace and defense may also require controlled environments and additional US-specific security obligations.
Security requirements should be defined before interfaces are built. A partner should identify which data crosses system boundaries, who can access it, and also how that access is monitored.
Questions to ask the partner:
A delivered message does not always mean that the business process completed successfully. An order message can reach a warehouse system while subsequent validation or processing fails.
The partner should support monitoring at two levels. Technical monitoring should cover interface availability, message failures, latency, queues, retries, and API performance. Business-level monitoring should identify exceptions that prevent a transaction from reaching its expected business outcome.
The monitoring model should also define who receives alerts and who owns resolution across connected systems. This becomes especially important when SAP and non-SAP applications belong to different teams or vendors.
Questions to ask the partner:
Production integrations must account for system outages and failed processing. So, the partner should define what happens from the first failure through detection, retry, reconciliation, and escalation.
Ask how the architecture handles issues like unavailable receiving systems, network interruptions, partial processing, duplicate messages, and long-running outages. Retries and queues can preserve messages during transient failures. Idempotency helps to avoid reprocessing the same message when it is delivered multiple times. Reconciliation can pinpoint transactions that require manual investigation.
The response should be specific. For example: if a receiving system remains unavailable for two hours, the partner should explain whether messages are queued, retried, expired, or redirected for manual processing.
Important questions to ask the partner:
Integration decisions can affect the ability to maintain and upgrade SAP S/4HANA. The partner should explain how new applications will connect without adding unnecessary custom logic to the S/4HANA core.
Look for an approach based on SAP-released APIs and other supported integration interfaces. SAP BTP can support side-by-side extensions and integration capabilities outside the S/4HANA core. Event-driven patterns may also reduce direct dependencies between applications.
The partner should explain where custom integration logic will reside and why. That answer should account for SAP's Clean Core principles, upgrade requirements, and the future growth of the application landscape.
Questions to ask the partner:
The integration partner's delivery model should match how the US enterprise operates. Assess access to US-based resources, time-zone coverage, onsite support where required, escalation paths, and experience delivering projects for US organizations.
Many SAP integration programs also involve teams and systems across several regions. A US headquarters may need to coordinate integrations with operations in Europe, Asia, Mexico, or Canada, as well as global suppliers and customers. The partner should explain how its local and global teams work together.
The key question is who provides accountability for delivery and who provides the technical capacity when the project requires expertise across time zones.
Questions to ask the partner:
The partner's sales and assessment teams may differ from the people responsible for architecture, implementation, and production support. Meet the technical leads before selecting the provider.
Depending on the project, this may include the Integration Architect, SAP Solution Architect, API Lead, SAP BTP Lead, Data Integration Lead, Security Lead, Project Manager, and Support Lead. Each role should have clear responsibility.
Ask who designs the architecture, who makes technical decisions, who builds the interfaces, and who responds to production incidents. Also confirm how much work the partner will subcontract.
Questions to ask the partner:
The partner should follow a structured lifecycle that covers discovery through ongoing production support. This process should define the current landscape, assess existing interfaces and technical debt, design the target architecture, build integrations, and validate them before production.
The design stage should define APIs, events, data contracts, security controls, error handling, and ownership. Also, the testing and deployment approach should address cutover, production monitoring, and post-go-live support.
The methodology should allow the enterprise to review architectural decisions before implementation begins. For large or complex landscapes, it should also support phased delivery and repeated testing as new integrations are added.
Questions to ask the partner:
Testing individual interfaces does not confirm that the complete business process works. The partner should test the full transaction flow across SAP and connected applications.
The approach may include unit, integration, end-to-end, regression, volume, performance, security, and failure testing. The required scope depends on the integration and business process.
For instance, a logistics flow could move an order through S/4HANA, EWM, warehouse automation, TM and a carrier platform. Testing needs to demonstrate the order is successful from start to finish, including failures and outages.
What questions to ask the partner:
References should demonstrate experience with projects that resemble the planned integration. Look beyond recognizable client names and ask about the SAP landscape, number and complexity of interfaces, industry processes, data volumes, and global operating model.
The most useful reference discussions cover difficult technical decisions. Ask how the partner handled system failures, third-party constraints, changing requirements, and post-go-live support. Also ask what changed after the initial deployment. That can reveal whether the architecture could accommodate additional systems and interfaces.
Questions to ask the partner:
Integration proposals can be difficult to compare because an “interface” does not represent a standard unit of effort. One simple data transfer may require limited configuration. Another integration may involve multiple systems, transformations, APIs, security controls, error handling, and extensive testing.
Compare the full scope, including architecture and design, interface development, testing, monitoring, documentation, support, maintenance, change requests, travel, third-party products, middleware, and cloud consumption. Also confirm how many interfaces are included and what assumptions apply to external systems.
Pay particular attention to post-go-live costs. Change requests, support coverage, SLA requirements, and ongoing maintenance can materially change the total cost of the SAP integration program.
Questions to ask the partner:
A weighted scorecard helps compare providers against the requirements that matter most to the project. The suggested weights below provide a starting point and should change when a project has specific priorities.
|
Evaluation area |
Suggested weight |
|
Integration architecture expertise |
20% |
|
SAP and BTP expertise |
15% |
|
SAP-to-non-SAP experience |
15% |
|
Industry knowledge |
10% |
|
Security and resilience |
10% |
|
Delivery methodology |
10% |
|
Delivery team |
5% |
|
Monitoring and support |
5% |
|
Commercial model |
5% |
|
US delivery capability |
5% |
For example, a complex multi-vendor environment may assign more weight to SAP-to-non-SAP experience. A 24/7 supply chain operation may increase the weight of resilience and support. An aerospace or defense project may place greater weight on security and controlled delivery environments.
LeverX note: A high total score should not override weaknesses in a critical area. For example, a partner can score well overall while lacking the specific non-SAP integration, security, or operational support capability required for one business-critical flow. Set minimum thresholds for those areas before comparing weighted totals.
“We can connect everything to everything”
A broad claim without questions about system versions, APIs, ownership, security, or process requirements can indicate a shallow assessment. Integration feasibility and integration architecture require different levels of analysis.
“We usually build direct connections”
Direct interfaces can work for limited scenarios. A partner that applies them by default may create unnecessary dependencies as the application landscape expands.
“We put everything through middleware”
Middleware should solve a defined architectural problem. Using it for every connection can add operational and licensing costs without improving the design.
“Let's choose the technology first”
The business process and technical requirements should guide the choice of API, event, message, batch process, or EDI. A technology recommendation made before that analysis may reflect a preferred tool rather than the actual requirement.
“Any system can update the data it needs”
The partner should be able to define ownership for critical business objects. Without clear ownership, conflicting updates and duplicate records become more likely.
“The integration will retry if something goes wrong”
Retries alone do not address duplicate messages, partial processing, long outages, or reconciliation. Ask for the complete failure-handling model.
“Our expertise is mainly SAP”
SAP expertise is essential, but many enterprise integrations depend on applications and platforms owned by other vendors. The partner should have experience working across those technical and organizational boundaries.
“If the message was delivered, the integration worked”
Technical delivery and business completion are different outcomes. A partner should explain how business-level failures will be detected and investigated.
“You will meet the delivery team later”
The enterprise should know who owns architecture, implementation, and production support before signing the contract. Unclear team assignments can create delivery risk.
“The price covers the implementation”
A low initial proposal may exclude testing, monitoring, documentation, support, change requests, third-party work, or production operations. Compare the full scope and ongoing costs before selecting a partner.
A structured process helps compare providers against the same requirements. It also reduces the risk of selecting a partner based on a generic demonstration rather than the enterprise's actual integration landscape.
The architecture workshop often provides the strongest evidence of partner capability. A credible partner should be able to explain technical trade-offs using the enterprise's systems and processes rather than presenting a generic reference architecture.
A strong SAP integration partner should be able to explain the consequences of its technical decisions several years beyond the initial implementation. That includes what happens when another application is added, an API changes, an SAP upgrade affects an interface, transaction volumes increase, or an external partner changes its requirements.
A useful test is to ask the partner to explain how the integration landscape will evolve. Can existing interfaces be reused? Can a new application connect without creating several new direct dependencies? Can the team identify the source of a failed business transaction across multiple systems? Can another team maintain the integration without relying on undocumented knowledge?
The answers reveal something that technical specifications alone cannot: whether the partner has designed for the operating life of the integration landscape, rather than only for project completion.
For a US enterprise, the same principle applies to the partner relationship itself. A capable provider should be able to combine architectural ownership with delivery resources, production support, and access to SAP and integration expertise as the landscape changes.
| What to look for | How LeverX addresses it |
| Long-term integration architecture | Designs integration landscapes with future SAP upgrades, new applications, changing APIs, higher transaction volumes, and evolving business requirements in mind. |
| End-to-end system visibility | Connects business processes across S/4HANA, SAP BTP, Integration Suite, legacy systems, and external applications to help teams trace data and identify integration issues. |
| Reusable and scalable integrations | Builds architectures that reduce unnecessary point-to-point dependencies and make it easier to connect new applications without redesigning the entire landscape. |
| SAP and non-SAP integration expertise | Brings experience across S/4HANA, EWM, TM, SAP BTP, legacy modernization, data integration, and API- and event-based architectures. |
| Operational ownership beyond go-live | Combines architecture, delivery resources, production support, and SAP integration expertise as the enterprise landscape evolves. |
| Experience across complex enterprise landscapes | Applies integration experience to multi-system environments and the specific technical, operational, and organizational constraints of US enterprises. |
This is where the selection criteria come together. A strong candidate should be able to take a specific business process, trace its data across the relevant systems, explain the integration choices, identify operational risks, and remain accountable for the result after go-live.
LeverX works with US enterprises on SAP integration initiatives, including S/4HANA, SAP BTP and Integration Suite projects, EWM and TM integrations, legacy modernization, data integration, and API- and event-based architectures. The relevant question for any prospective engagement is whether the partner can apply that experience to the enterprise's specific landscape and constraints.
An SAP integration partner connects SAP applications with non-SAP systems, cloud platforms, legacy applications and external business networks. Work can include architecture design, interface development, data mapping, testing, deployment and post-go-live support.
If you need to connect cloud and on-premises applications, manage APIs, support event-driven scenarios, or handle B2B integration, SAP Integration Suite might be the right answer for your enterprise. The existing integration architecture and the specific requirements of the enterprise should also be considered in the decision.
The RFP should detail the systems and business processes to be involved, existing interfaces, data volumes, timing requirements, security requirements, testing expectations and support requirements. It should also require providers to provide assumptions, exclusions, third-party dependencies, and delivery model.
The cost is based on the complexity of the integration, not just the number of interfaces. The major factors are systems involved, data transformations, custom development, security controls, testing, third-party dependencies and post go live support. It can be more work to use a complex interface than several simple connections.
One integration can take weeks, or even several months, depending on its complexity and dependencies. Larger integration programs take longer to run. Timelines are impacted by architectural decisions, system readiness, availability of APIs, data requirements, scope of testing and coordination with external providers.
Disclaimer: This guide provides general information for evaluating SAP integration partners. Recommendations, costs, timelines, and technology choices vary by project and should be validated against the specific enterprise environment. Always conduct appropriate technical, security, compliance, and business due diligence before implementation.