Enterprise Architecture Complexity Index (EACI)
ActiveMeasure architecture complexity drivers and surface practical signals for risk, debt, and refactor planning.
67 / 100
Complexity Index
Key Findings
- Integration surface (14 external APIs across 8 domains) is the primary complexity driver — accounts for 38% of the total index.
- Technical debt multiplier of 2.4× means new feature delivery is taking more than twice as long as a comparable clean system.
- Domain coupling between claims, billing, and core policy creates a fragility cluster — a change in one ripples across all three.
Prioritise reducing the integration surface to below 8 APIs before adding new capabilities. Introduce an anti-corruption layer between claims and the legacy policy core to break the coupling cluster.
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Tool Model Metadata
- Model Version:
- 1.1
- Last Reviewed:
- Mar 2026
- Decision Model:
- Internal Architecture Framework
Methodology
EACI Weighted Complexity Model
Measures enterprise architecture complexity using weighted structural drivers and cumulative technical debt signals.
Framework Alignment
- TOGAF Enterprise Architecture Principles
Enterprise Architecture
- Domain-Driven Design
Architecture Design