07 - Step-by-Step Migration: From Monolith to Modular Monolith
Migrate your legacy monolith: Phase 1 - Identify boundaries, Phase 2 - Physical separation, Phase 3 - API extraction, Phase 4 - Event-driven migration
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Migrate your legacy monolith: Phase 1 - Identify boundaries, Phase 2 - Physical separation, Phase 3 - API extraction, Phase 4 - Event-driven migration. Realistic timeline: 2-6 months, low risk. Includes: case study with metrics.
What you'll learn
- 1.1 Dependency Analysis
- 1.2 Event Storming with the Team
- 1.3 Prioritization
- Testing Strategy for Phase 2
- Big Bang Rewrite
This article is part of the Architecture series on federicocalo.dev.
Read the full article
The complete article (16 min read) with code examples, diagrams, and practical exercises is available here:
➡️ 07 - Step-by-Step Migration: From Monolith to Modular Monolith
https://federicocalo.dev/en/blog/migration-step-step-monolith-modular
By Federico Calò — Software Developer & Technical Writer