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System Integration – IT Integration
Integration

System Integration – Connect Your IT Systems

We connect your systems and apps into one IT landscape. Smart integration creates efficient workflows.

Our Integration Services

API Development & Integration

Development and integration of custom APIs.

  • REST & GraphQL APIs
  • Webhook Integration

ERP & CRM Integration

Connection of ERP and CRM systems.

  • SAP, Salesforce, Dynamics
  • Data Synchronization

IoT Integration

Connection of IoT devices and sensors.

  • Sensor Data Processing
  • Real-time Analytics

Knowledge & Answers

Frequently Asked Questions About System Integration

Basics & Getting Started

What exactly is system integration?

System integration connects different software systems, databases, and platforms so they can exchange data and work together. Goal: automated processes instead of manual data transfer.

Do you connect SAP and Salesforce?

Yes, that's a classic. We synchronize customer and order data bidirectionally. Also other combinations: ERP with shop, CRM with marketing, PIM with marketplaces – we connect everything.

Thorsten Frieling – Project Manager Groenewold IT Solutions

Identify integration potential?

We analyze your system landscape and show optimization potential.

Thorsten Frieling – Project Management

Request Analysis

Technology & Architecture

Do we need middleware?

With more than 3 systems, usually yes – to avoid 'spaghetti architecture'. We advise on the right solution (ESB, iPaaS, custom middleware) depending on requirements and budget.

Real-time or batch integration?

Depends on the use case. Real-time for critical processes (orders, stock), batch for less time-critical data (reports, master data sync). Often a mix of both makes sense.

Björn Groenewold – Managing Director Groenewold IT Solutions

Architecture advice needed?

We design the optimal integration architecture for your landscape.

Björn Groenewold – CEO

Contact us

Timeline & Process

How long does an integration take?

From a few days for standard APIs to months for complex enterprise landscapes. We usually start with a Proof of Concept to validate feasibility and effort.

What happens with errors?

We implement monitoring that reports errors. Data is buffered and retransmitted once the target system is available again. Full traceability and alerting.

Costs & ROI

What does system integration cost?

Simple point-to-point from €5,000, complex enterprise integrations €50,000-200,000+. ROI is often reached within months through reduced manual work and fewer errors.

How quickly does integration pay off?

Usually within 6-18 months. Savings come from automated processes, fewer errors, faster reporting, and better data quality. We can calculate the business case with you.

Thorsten Frieling – Project Manager Groenewold IT Solutions

Ready for seamlessly integrated systems?

Let's talk about connecting your IT landscape.

Thorsten Frieling – Project Management

Start Project

System Integration: Bridging Legacy and Modern Infrastructure

Most enterprise IT landscapes are not monolithic systems but patchworks of specialized tools accumulated over years of organic growth. Your ERP handles finance, a separate CRM manages customer relationships, the warehouse runs its own software, and marketing uses yet another platform. Without proper integration, employees waste hours manually transferring data between these silos, errors multiply at every handoff point, and management lacks a unified view of business operations. System integration solves this by creating automated data highways between your critical applications.

We approach integration projects with an architecture-first mindset because poorly planned connections quickly devolve into an unmaintainable mess of point-to-point links. For enterprises with more than three interconnected systems, we typically recommend a middleware layer or integration platform that serves as a central hub for data routing, transformation, and monitoring. This hub-and-spoke model makes it straightforward to add new systems later without rewriting existing connections, dramatically reducing the long-term cost of keeping your IT landscape connected.

Real-time versus batch integration is a design decision that significantly impacts both cost and complexity. Order processing and inventory updates typically demand real-time synchronization through event-driven architectures, while master data synchronization and reporting can often run on scheduled intervals. We help you make these trade-offs by mapping each data flow to its actual business urgency, ensuring you invest in real-time capabilities only where they genuinely matter rather than over-engineering connections that could work perfectly well with hourly updates.

The value of system integration becomes tangible quickly: manual data entry errors drop to near zero, reports that previously took days to compile generate automatically, and your teams gain a single source of truth across all platforms. We have seen integration projects pay for themselves within six months through reduced labor costs and improved data quality alone. Our monitoring and alerting infrastructure ensures that data flows remain reliable around the clock, with automatic retry mechanisms and clear escalation paths for the rare situations when intervention is needed.

Frequently Asked Questions

System Integration

Scope, Cost & Support

What does system integration include?

We connect ERP, CRM, e-commerce and other systems via APIs or middleware. Data flows are automated, validated and monitored so you get one source of truth.

How much does integration cost?

Simple point-to-point from around €10,000 excl. VAT; multi-system landscapes from €50,000–200,000+ excl. VAT. We scope after a short workshop and give a fixed or capped quote.

Real-time or batch?

We design per flow: order and inventory often real-time; master data and reporting can be scheduled. We recommend what fits each business need.

What about ongoing support?

We document flows and dependencies and can run monitoring and support. When source or target systems change, we update and test so integration stays reliable.

Björn Groenewold – Geschäftsführer Groenewold IT Solutions

Discuss system integration

We scope after a short workshop and give a fixed or capped quote.

Book a call

Related Topics

Complementary Services from Other Areas

These services are frequently requested together with System Integration or complement it thematically.

Software & Platforms

Data, Analytics & Databases

Your Next Step

Tell us briefly what you have in mind.

We'll analyze your system landscape and identify integration options – with a clear focus on stability.

30 min strategy call – 100% free & non-binding