Methods, systems, and computer-readable media for migration to a two-tiered data store are disclosed. A destination data store comprises a primary (warm) tier and a secondary (cold) tier having higher latency for data access than the primary tier. Migration is initiated of live updates from a source data store to the primary tier of the destination data store. A replica of the source data store is generated while the source data store is online. Transform logic is optionally applied to source data from the replica of the source data store. The source data (transformed or not) is imported to the secondary tier of the destination data store.