ERP introduction: integration with existing systems – A Guide to SMEs

The decision to introduce a new ERP system is an important step in the direction of digitalization and efficiency.

But the real challenge is often not only the selection of the appropriate software.

However, the seamless integration of the new system into the existing IT landscape. A successful ERP introduction in the middle class depends significantly on how well the new system communicates with existing applications and exchanges data.

In this article we highlight the central aspects of ERP integration and show how midsize companies can successfully master this challenge.

Why is system integration so crucial in ERP integration?

The decision to introduce a new ERP system is an important step in the direction of digitalization and efficiency.

Leaders exploring ERP introduction: integration with existing systems – A Guide to SMEs can use API & Integration Projects, Cost Calculator: API Development, Solution: Integration Chaos sowie RPA vs. API Integration as structured entry points.

An ERP system (Enterprise Resource Planning) bundles and controls enterprise-wide resources and processes.

From merchandise management to financial accounting to human resources – ideally, all threads work together in a central system.

In practice, new ERP solutions meet a growing IT infrastructure with expert island solutions, for example for customer relationship management (CRM), warehouse management or e-commerce shop.

Without a thought-out integration strategy, data silos, manual double acquisitions and inefficient processes threaten.

Successful integration, on the other hand, creates a uniform database, automates workflows and enables sound, data-based decisions in real time.

The objectives of ERP integration

• Automatization of business processes: Reduction of manual interventions and error sources.
• Single Source of Truth: A consistent and reliable database for all departments.
• Improving clarity: Full look at all business areas.
• Enhancing efficiency: Faster and slimmer processes.
• Increasing agility: Faster reaction to market changes.

Challenges for integration of ERP systems

The integration of an ERP system is a complex project that presents midsize companies with different challenges.

A predictive planning and the review of potential obstacles are crucial for success.

Typical challenges at a glance

Challenge	Description	Solution approach
Old systems and interfaces	Old systems often do not have standard interfaces, making connection more difficult.	Use of middleware or integration platforms (iPaaS) to bridge the systems.
Data quality and migration Uneven, outdated or double data in old systems can cause problems.	Rollout of careful data purification and validation

References and further reading

The following separate references complement the topics in this article:

• Bitkom – German digital industry association.
• German Federal Office for Information Security (BSI).
• European Commission – Digital strategy.
• MDN Web Docs (Mozilla)
• W3C – World Wide Web Consortium.

"DevOps is less about tools and more about shared ownership of quality and release discipline."

— Björn Groenewold, Managing Director, Groenewold IT Solutions

Frequently Asked Questions (FAQ)

What is this article about: “ERP introduction: integration with existing systems – A Guide to SMEs”?

This article sums up practical aspects of ERP introduction. Integration with existing systems – A Guide to SMEs for leaders and delivery teams. In short.

The decision to introduce a new ERP system is an important step in the direction of digitalization and efficiency.

Who benefits most from the content described here?

It is especially relevant for firms in Software development that need reliable systems, clear interfaces, and predictable delivery — from mid-market teams to expert departments.

How does this topic fit into an IT or digital strategy?

You can map the topic to service building blocks such as custom software and delivery support. Architecture reviews and stepwise rollout reduce risk and rework.

For multi-system landscapes, IT consulting and architecture helps align vendors and internal teams.

What are sensible next steps if we need support?

For architecture, rollout, or a second expert opinion, book a free initial consultation — including timeline and interface alignment.