Map the sources of truth
Identify which system owns each data set and how changes flow between systems. Include scheduled jobs and callbacks where present. A migration plan needs to account for writes during the transition, not just the initial data copy.
Rehearse with representative data
Define repeatable migration steps and checks for content structure, key records and integration behaviour. Use appropriately protected test data. Capture failed conversions and make reconciliation part of the process rather than relying on a visual spot check alone.
Agree release sequencing and recovery
Determine which application, database and integration changes must move together. Define whether content changes need to pause and how data created after a backup would be handled during recovery. A database restore alone may not reverse changes made in another system.
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Discuss your platform
Share your current platform, the change you need and your delivery constraints. Scope and engagement can be discussed around your team.
Discuss an Umbraco Project