#APIs – Pedro Veloso

Modern integration architecture diagram showing legacy systems connected through an API gateway, integration services, and event bus to scalable cloud and modern applications, using a clean blue and teal color palette.

By - Pedro Veloso
Posted on 05/03/202605/03/2026
Posted in Architecture & System Integration, Software Architecture, Software Engineering, Solutions Architecture & Interoperability, Technology

Designing Scalable Integration for Legacy Systems Without a Full Rewrite

Modernising legacy systems does not require a full rewrite. A practical, incremental approach using APIs, event-driven design, and standardised data contracts can significantly improve integration, scalability, and reliability while reducing risk.