This category covers our API development and integration services: REST and GraphQL APIs, secure system connections and practical integration into existing IT environments. Articles are written for developers, architects and technical leads who need interfaces that last — not one-off scripts.
Interfaces & APIs
API Development & Integration: REST, GraphQL and System Connectivity for Teams Below you will find articles, tips and insights in the Interfaces & APIs category. Browse the list or use the filters to switch to another topic.
The financial world is undergoing profound change. Transmissions through regulatory requirements, especially the PSD2 directive, and the increasing expectations of customers in digital, seamless…
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Digitization is no longer an abstract topic of the future, but a current need, especially for the crafts and the service sector. In a world where customers fast reaction times, **transparent…
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In recent years, digital transformation has penetrated all areas of society, and the education and research sector is no exception. Universities, research institutions and educational technology…
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API Testing: Strategies and tools for reliable interfaces. Unit tests, integration tests, contract testing and load tests with Postman, Jest and k6.
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The fourth industrial revolution, known as Industry 4.0, transforms the way goods are produced. Networking is at the centre of this profound change. But the vision of a Smart Factory in which Mas...
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Digital transformation in healthcare is no longer a distant future scenario, but an urgent need. In view of increasing patient numbers, complex treatment paths and the demand for more efficient and…
Read articleAPI monthlyization: How to successfully market your interface as a product. Business models, pricing strategies and API marketplaces.
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In the dynamic world of trade and e-commerce, the ability to react quickly to market changes and to seamlessly shape customer experiences is crucial for success. Act behind the scenes of this digital…
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The logistics and transport industry is the critical foundation of the modern global economy. From procurement to production to delivery to the end customers – the smooth movement of goods is a…
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Interfaces and APIs are the nervous system of modern IT landscapes. They enable data exchange between systems, automate processes and create the basis for innovative business models. This guide will…
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The real estate industry, long known as one of the most traditional industries, experiences a profound digital transformation. The focus of this development is interfaces and Application Programming…
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The energy and supply industries are facing a fundamental change. The Energiewende, driven by the expansion of decentralized renewable energies (EE), the increasing electromobility and the need for…
Read articleMicroservices and API gateways: architecture for scalable systems. Learn how API gateways act as a central control level for microservices.
Read articleAPIs enable secure data exchange between systems, promote modular, scalable software and support efficient processes as well as flexible, sustainable applications.
Read articleComprehensive Guide to Interface Development 2026: Basics, API Architectures (REST, GraphQL, SOAP), Development Process and Current Trends. All you need to know about API development.
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Public administration in Germany is facing one of the biggest challenges of its history: the comprehensive digital transformation. The online access law (OZG) has given the start, but the true…
Read articleHeadless CMS and Content APIs: The Future of Content Management. Learn how API-first CMS systems enable Omnichannel strategies.
Read articleThis category covers our API development and integration services. REST and GraphQL APIs, secure system connections and practical integration into existing IT environments.
Articles are written for developers, architects and technical leads who need interfaces that last — not one-off scripts.
We cover design patterns, versioning, authentication, monitoring and how APIs support ERP, CRM and custom software. The content follows the same priorities as our service page on API integration:
For broader interface topics see the Interfaces category. For web frontends that use APIs see Web Development.
For hands-on support aligned with these articles, see API development and integration on our services site.
Use these guides when you first explore Interfaces & APIs or need to check a plan. The advice draws on software project experience since 2010.
Browse the category overview for related decisions. For a project-specific question, send the context through our software project contact page.
API and integration articles mirror how we design interfaces in client projects. For engineering support and roadmaps, use the same service pillars we apply in production:
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These articles are for teams that need clear decisions, not marketing noise. If you want to connect what you have read to scope, effort and a realistic path on your project, a short, non-binding call is often the most efficient next step. We can point you to the right service page, reference cases or follow-up content.
Björn Groenewold – Managing Director
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