Playbook 01
Legacy modernization
Replace an aging system one capability at a time, without a risky big-bang cutover.
When it fits A mission system that is expensive to maintain, hard to change or running on unsupported technology.
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Assess
Inventory the system, its data, integrations and users, and rank capabilities by risk and value.
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Wrap
Put an API layer in front of the legacy system so new services can take over one capability at a time.
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Replace
Ship modern services in short increments, with data migrated and reconciled at every step.
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Retire
Decommission legacy components only after their replacements are proven in production.
Target outcome Modern capability in production early, and legacy retired on evidence rather than hope.