Cloud migration

Cloud migration moves or transforms applications, data and dependencies into cloud services. Strategies may include rehosting, refactoring, replacing or retiring, and one portfolio often combines them. Copying a virtual machine does not resolve architecture, identity, network, licences, performance, compliance or cost. Before moving, teams should inventory owners, flows, data, dependencies, baselines and acceptance criteria. The plan defines waves, backup, synchronisation, testing, cutover, rollback and later operations. Temporary coexistence can add complexity and spend. Each workload needs functional, security, performance, recovery and observability validation in the destination. Completing data transfer is not completing migration: reconciliation, safe source retirement, documentation, support and confirmation of the intended business outcome remain. Provider status alone does not prove that the migrated service works.