Map the current capability
Document users, critical journeys, data, integrations, operating workarounds and failure consequences. This separates cosmetic age from structural constraint.
Choose a treatment by component
Some parts can be retained, others exposed through APIs, replaced with a platform or rebuilt where differentiation justifies ownership.
Design migration as a product
Content, data, identity, SEO, analytics, training and cutover each need an owner and acceptance evidence. Migration is not a final technical task.
Create a reversible sequence
Smaller decision gates, observable interfaces and rollback options reduce the cost of learning and protect the operation during change.
Useful next step
Explore the capability