Cloud migration fails in predictable ways: unclear ownership, surprise costs, performance regressions, and security controls that arrive after the workloads do. A disciplined checklist prevents most of them.
Step one: inventory everything. Applications, dependencies, data volumes, licensing constraints, and compliance obligations. You cannot migrate what you have not mapped, and dependency surprises are the number one cause of migration weekend disasters.
Step two: classify workloads. Not everything belongs in the cloud, and not everything belongs in the same cloud. Decide what to rehost, replatform, refactor, retire, or retain on-premise. This decision matrix is where an experienced advisor earns their fee.
Step three: design the landing zone before moving anything. Identity, networking, logging, encryption, and cost guardrails must exist on day one. Retrofitting security into a running cloud environment costs multiples of building it in from the start.
Step four: migrate in waves, starting with low-risk workloads. Each wave should end with a retrospective that sharpens the next. Measure performance and cost against baselines so you can prove the migration delivered.
Step five: optimize continuously. Cloud is not a destination; it is an operating model. Right-sizing, reserved capacity, and storage tiering routinely cut bills by 20-40% in the first year after migration.