Not everything should move, and not everything should move the same way
The honest first output of a migration project is an inventory with a decision against each workload: lift and shift as-is, re-platform onto managed services, rewrite properly, or leave where it is. Applications with a hard dependency on specific hardware, or with a license that punishes virtualization, sometimes belong exactly where they are.
Lift and shift is fastest and produces the smallest immediate benefit — you now rent the same inefficiency by the hour. Re-platforming onto managed databases, queues and object storage is usually where the operational savings actually come from. We mark which is which before any workload moves.
Cost modeling before the bill arrives
Cloud pricing punishes assumptions. Egress charges on a data-heavy application, per-request costs on a chatty architecture, and over-provisioned instances sized from peak load rather than typical load are the three that most often turn a migration into a budget conversation.
We model the expected monthly cost as part of planning, with the drivers named, so the number that arrives after cutover is one you have already seen. Where the model shows the cloud is more expensive for a given workload, that is worth knowing before the move, not after.
Cutover without a weekend of held breath
The migration plan includes the rollback plan. For each workload we agree the sequence, the data synchronization approach, what runs in parallel and for how long, and the specific conditions under which we abandon the cutover and return to the old environment.
Databases usually move with replication running until the moment of switch rather than a copy-and-pray export. Stateless services move behind a load balancer that can shift traffic gradually and shift it back.
What you are left running
Infrastructure defined as code rather than as a set of console clicks nobody remembers, containerized with Docker and orchestrated with Kubernetes where the workload justifies it, with CI/CD pipelines, monitoring and backups configured before handover — not as a follow-up project.
We work across AWS, Azure and Google Cloud. Which one is right usually follows your existing licensing, your team's skills and your compliance requirements rather than a feature comparison.