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Enterprise Architecture

When to Modernise: Evaluating Legacy Software Systems

Arataki Nexus Systems Engineering 8 min readApril 2026

Key metrics and architectural frameworks for deciding between system refactoring, modular replacement, or incremental cloud migration.

This advisory note is a summary of how the Arataki Nexus enterprise architecturepractice approaches this area. The full analysis is tailored to each organisation's context during a consultation.

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