Modernize with Confidence – convert your legacy liability into a competitive advantage

Legacy-modernization.io is a comprehensive collection of proven patterns, strategies, and resources to help you plan and execute your modernization journey with confidence.

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Featured Patterns

Strangler Fig Pattern
migration

Strangler Fig

The Strangler Fig pattern is a metaphor invented by Martin Fowler to describe a gradual migration away from a legacy system to a new system (aka the strangler fig application).
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Bubble Pattern
migration

Bubble

The Bubble pattern is about creating a new domain model to encapsulate and gradually replace a specific subdomain/subsystem. Eventually, the bubble should pop.
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Bi-directional Sync Pattern
data-synchronization

Bi-directional Sync

Bi-directional Sync enables two systems to stay in sync by propagating changes in both directions, allowing for parallel operation and gradual migration.
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Featured Talks

Legacy Modernization: The Big Picture
Legacy Modernization: EventStorming for Modernization
Legacy Modernization: Modernization Patterns
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