How to migrate your servers to the cloud without losing data

Migrating to the cloud is not copying files to a remote disk. It is a project with concrete risks: losing information, taking services down or doubling costs. The good news is that, with a method, migration is predictable. These are the steps we follow.

1. Inventory and assessment

Before moving anything, you need to know what you have. Document servers, operating systems, applications, licenses and dependencies between services. Many migrations fail because a system that depends on another nobody remembered is discovered too late.

2. Choose the right destination

Not everything goes to the cloud. Some workloads run better in cloud, others in hybrid, and others are best kept on-premise. The decision depends on:

• The performance and latency the application needs.
• Compliance requirements and where the data must live.
• Projected monthly cost versus your current infrastructure.

3. Verified backups

A backup you have not tested restoring is not a backup. Before the cutover, make sure you have complete and recent copies, and that you have restored at least one in a test environment.

4. Plan the cutover window

The migration happens outside critical hours, with an agreed window and a rollback plan: if something fails, how to go back in minutes. Telling users what to expect reduces uncertainty.

5. Execute and verify

After moving the services, verify item by item: access, email, databases, automatic backups, performance and security. Do not consider the migration done until the whole checklist is green.

6. Optimize after the cutover

Once the dust settles, the savings come: right-size instances, shut down resources nobody uses and set up monitoring and alerts. It is common for the first cloud bill to be over-provisioned.

The most expensive mistake

The most expensive mistake is not technical, it is planning: migrating without an inventory, without tested backups and without a rollback plan. With those three elements, even a complex project becomes manageable.

If you are evaluating moving your infrastructure, the first step is an honest assessment: what is worth migrating, what is not, and how much you will pay per month. That analysis prevents surprises.