Connect Systems, Synchronize Data, Automate Processes
A B2B online shop reaches its full potential only when it communicates seamlessly with ERP, CRM, PIM and accounting. We develop bidirectional interfaces that synchronize product master data, customer pricing, stock levels and orders in real time across your systems. Whether SAP Business One, SAP S/4HANA, Microsoft Dynamics 365 or DATEV: our integration projects eliminate data silos and establish a consistent data foundation for your entire sales operation.
In many B2B organizations, data on products, customers, pricing and inventory lives in multiple systems simultaneously: in the ERP for resource planning, in the PIM for product information, in the CRM for customer relationships and in the online shop for digital sales. Without clean interfaces, inconsistencies emerge that lead to incorrect shop pricing, faulty stock level displays and manual rework. As a specialized B2B e-commerce agency, we build integration solutions that reliably connect these systems and spare your teams the burden of maintaining data in multiple places.
Why Seamless Integration Is Essential in B2B Commerce
In B2B commerce, data quality and process speed have a direct impact on revenue. If a key account does not see their negotiated volume pricing in the shop, they will not order. If stock levels in the shop do not match the warehouse system, delivery delays and support inquiries follow. If orders must be transferred manually from the shop into the ERP, the entire fulfillment cycle slows down. Professional interface development solves these problems at the root: data flows automatically, bidirectionally and in near real time across all connected systems. The result is faster order cycles, fewer errors and significantly reduced workload for your internal teams.
Six Integration Scenarios for Your B2B Shop
Every system landscape is different. Across more than 85 B2B projects, we have encountered the most common integration requirements and developed proven approaches for each type.
ERP Connectivity
Bidirectional synchronization with SAP Business One, SAP S/4HANA and Microsoft Dynamics 365 Business Central. Product master data, customer-specific pricing, stock levels and orders flow automatically between ERP and Shopware via REST APIs, OData endpoints or RFC/BAPI interfaces. Changes in the ERP are visible in the shop within seconds.
DATEV Integration
Automated transfer of invoices, credit notes and payment information to DATEV Unternehmen Online or DATEV Rechnungswesen. Account assignment rules are mapped in the integration layer so your accountant can accept the postings without manual rework. GoBD-compliant archiving included.
PIM Systems
Connection of Product Information Management systems as the single source of truth for product data. Product descriptions, technical data sheets, images, documents and category trees are synchronized reliably into your Shopware shop. Support for ETIM, BMEcat and ECLASS classifications for standardized product data.
CRM Integration
Linking your Customer Relationship Management with the online shop. Customer master data, contacts, sales territories and interaction history are synchronized. Your sales team sees online orders in the CRM, and the shop uses CRM segmentation for personalized catalogs and customer-specific pricing.
Logistics and Shipping
Integration with warehouse management systems, shipping carriers and track-and-trace platforms. Tracking numbers, delivery status and return information are exchanged automatically between logistics partner and Shopware, displayed in real time in the B2B customer portal.
Marketplaces and EDI
Integration with B2B marketplaces and traditional EDI communication via EDIFACT, cXML or OCI punchout. Orders from your customers' procurement platforms flow directly into your Shopware shop and onward into your ERP without manual intermediate steps.
Our Technical Approach to Integration Projects
Interfaces are the most critical component of a B2B e-commerce architecture. When an integration fails, orders stall and data drifts apart. That is why we rely on proven design patterns that prioritize reliability, traceability and maintainability. Our integrations use message queues (RabbitMQ, Apache Kafka) for asynchronous processing, ensuring that a temporary outage of a target system does not cause data loss. Idempotent API calls prevent repeated transmissions from creating duplicates. Comprehensive logging and monitoring allow us to detect errors early and pinpoint their cause precisely. As part of our performance and monitoring services, we continue to monitor your interfaces well beyond go-live.
Integration Project in Five Phases
Interface Analysis
We document your existing system landscape, capture all relevant data flows and determine which system serves as the authoritative source for each data domain. The output is an integration matrix showing which data needs to be synchronized in which direction and at what frequency.
Architecture Design and Mapping
Based on the analysis, we design the integration architecture: direct API-to-API connectivity or a middleware layer, synchronous or asynchronous via message queues, REST or OData or GraphQL. We define data formats, field mappings, transformation rules, error handling and retry strategies.
Development and Unit Testing
Interface development proceeds in isolated modules with automated tests against mock services. Each data path is validated individually: product import, price synchronization, inventory reconciliation, order transfer and status write-back. Parallelization of connectors reduces overall development time.
Integration and Load Testing
We test all data flows end to end against your real systems in a staging environment. Load tests with representative data volumes confirm that the interfaces perform reliably even under elevated order volume and large product catalog updates. Only after successful acceptance do we proceed to production.
Go-Live and Ongoing Monitoring
The interfaces are activated in stages, accompanied by comprehensive monitoring. Failed data records are automatically routed to a reprocessing queue. Dashboards display synchronization status, throughput and error rates in real time. Fine-tuning of intervals and error handling takes place during the first weeks of operation.
Integration Options Compared
Choosing the right integration approach depends on the complexity of your system landscape, requirements for latency and reliability, and your budget. The following overview helps with orientation.
| Criterion | Direct API Connection | Middleware / Integration Layer | File-Based Import |
|---|---|---|---|
| Real-Time Capability | Near real time (seconds) | Near real time with buffering | Batch-based (minutes to hours) |
| Error Handling | In application code | Centralized in middleware layer | Manual reprocessing |
| Scalability | Dependent on target API limits | High through message queues | Limited by file sizes |
| Maintenance Effort | Individual per interface | Centralized and standardized | Low but error-prone |
| Best Suited For | Few systems, simple flows | Complex landscapes, many systems | Legacy systems without APIs |
| Typical Technologies | REST, GraphQL, OData, SOAP | RabbitMQ, Redis Streams, Apache Kafka | CSV, XML, SFTP, EDIFACT |
Data Security and Compliance in Integrations
B2B data flows carry business-critical information: customer pricing, order data, accounts receivable master records and invoice details. The security of this data is our highest priority. All interfaces use encrypted connections (TLS 1.3), and API access is secured via OAuth2 tokens or dedicated API keys that are rotated on a regular schedule.
For GDPR-relevant data flows, we implement pseudonymization mechanisms and access logging. Retention periods for transaction logs are coordinated with your legal department. For the DATEV connection, we ensure GoBD compliance so that document data is archived in an audit-proof manner and the automated document export meets the requirements of the German tax authorities.
Additionally, we define a detailed error escalation concept for every interface. Critical errors such as failed order write-backs are reported immediately via email and optionally via webhook to your team. Less critical warnings such as temporary timeout errors are logged and displayed in aggregate on the monitoring dashboard. This way, you maintain a constant overview of the health of your entire integration landscape.
Frequently Asked Questions About Integrations and Interfaces
Your System Landscape Deserves a Well-Designed Integration
In a free initial consultation, we analyze together which systems you want to connect, which data flows are critical and which integration approach best fits your requirements.
Discuss Your Integration