Cloud Migration Checklist: Steps for a Smooth Move
Quick Answer: A cloud migration checklist walks through every stage of moving your systems and data to the cloud, from assessing what you have now, through planning, execution, testing, and post-migration monitoring. Following a structured checklist is what separates a cloud migration that causes a weekend of downtime from one your team barely notices. RydaTech uses a version of this checklist on every cloud migration project we run for Bay Area businesses.
Why You Need a Cloud Migration Checklist
Cloud migrations rarely fail because of the cloud platform itself. They fail because of missed dependencies, a system nobody accounted for, data that didn’t transfer cleanly, or a rollback plan that only existed in someone’s head. A checklist turns a migration from a one-time leap of faith into a repeatable, verifiable process, which matters most on the day something doesn’t go exactly as planned.
What Is a Migration Checklist?
A migration checklist is a structured, step-by-step list covering every phase of a system move, before, during, and after the actual migration event. A good one goes beyond “move the data” and includes assessment, planning, testing, and verification steps, so nothing gets discovered for the first time in production.
The 7 Steps of a Cloud Migration Model
Most well-run cloud migrations follow a version of these seven stages, regardless of which cloud platform is involved.
1. Assess
Take stock of your current systems, applications, dependencies, and data. This step determines everything that follows, and skipping it is the single most common cause of migration surprises.
2. Plan
Define your migration strategy for each system (see the R’s frameworks below), your timeline, your budget, and what “success” looks like for this specific move.
3. Design
Design the target cloud architecture: how systems will be structured, secured, and connected once they’re in the cloud, not just where the data will physically sit.
4. Migrate
Execute the actual move, ideally in phases rather than all at once, so problems surface in a contained way rather than across your entire environment simultaneously.
5. Test
Verify that migrated systems function correctly, data is complete and accurate, and performance meets expectations, before declaring the migration complete.
6. Optimize
Once systems are stable in the cloud, look for opportunities to improve cost, performance, and security that weren’t possible in the old environment.
7. Monitor and Manage
Cloud migration isn’t a one-time event with an end date. Ongoing monitoring catches issues, cost creep, and security gaps that emerge after the initial excitement of “we’re done” has passed.
Choosing a Migration Strategy: The 5 R’s and 7 R’s of Cloud Migration
If you’ve researched cloud migration, you’ve likely seen references to both “5 R’s” and “7 R’s,” and the difference is worth clearing up, since both are correct, just from different points in time.
The Original 5 R’s (Gartner)
Analyst firm Gartner introduced the first version of this framework in 2010, giving businesses a way to classify each application by migration approach: Rehost, Refactor, Revise, Rebuild, and Replace.
The Current 7 R’s
As cloud adoption matured, the framework expanded. AWS added Retire in 2016 and Retain in 2017, and the terminology for a few strategies shifted along the way. The current, widely used 7 R’s are:
- Rehost — move an application to the cloud with little to no change (“lift and shift”).
- Relocate — move infrastructure to the cloud at the platform level, without rebuilding the application itself.
- Replatform — make small optimizations during the move without changing the application’s core architecture.
- Repurchase — replace an existing system with a cloud-native alternative, often a SaaS product.
- Refactor — rebuild or re-architect the application to take full advantage of cloud-native features.
- Retire — decommission systems that are no longer needed rather than migrating them at all.
- Retain — keep certain systems on-premises intentionally, at least for now.
Not every application in your business needs the same strategy. Part of a good migration plan is applying the right R to each system individually, rather than defaulting to one approach for everything.
The Cloud Migration Checklist
Before Migration
- Inventory all applications, servers, and data that could be affected by the move.
- Identify dependencies between systems, including ones that aren’t obvious from the org chart.
- Choose a migration strategy (from the R’s above) for each major system.
- Set a realistic timeline that accounts for testing, not just the migration event itself.
- Back up everything before touching anything. This is non-negotiable.
- Define what downtime, if any, is acceptable, and communicate that to affected teams in advance.
During Migration
- Migrate in phases where possible, rather than everything at once.
- Monitor the migration in real time rather than starting it and walking away.
- Keep the rollback plan ready and understood by everyone involved, not just written down somewhere.
After Migration
- Verify data completeness and accuracy against the original source.
- Test application performance and functionality under real conditions, not just a quick glance.
- Confirm security configurations, permissions, and access controls carried over correctly.
- Monitor costs and performance for the following weeks, since issues sometimes only appear under real usage patterns.
- Document what was migrated, how, and what was learned, so the next migration is easier than this one.
Common Cloud Migration Mistakes to Avoid
- Skipping the assessment phase and migrating systems nobody has fully mapped out.
- Migrating everything at once instead of in manageable phases.
- Not testing backups before relying on them as a safety net.
- Underestimating dependencies between systems that weren’t obvious until something broke.
- Treating migration as a one-time event instead of the start of ongoing cloud management.
This overlaps closely with the risks covered in our guide to data backup and disaster recovery services, since a migration without a tested backup plan carries the same exposure as day-to-day operations without one.
How RydaTech Approaches Cloud Migration
RydaTech plans and executes cloud migration projects for Bay Area businesses using a version of the checklist above, adapted to each business’s specific systems and risk tolerance. If your migration also involves moving data between platforms rather than just relocating infrastructure, our data migration services team handles that as part of the same project rather than treating it as a separate job. Migrations that touch sensitive or regulated data often connect to our SOC 2 and cybersecurity assessment work as well, since moving systems is a natural point to also tighten up security around them.
You can read more about our approach and who we are, or see what other Bay Area businesses have said in our testimonials. If you’re ready to talk through a migration, get in touch for a scoped assessment.
Frequently Asked Questions
What is a migration checklist?
A migration checklist is a structured list covering every phase of moving systems or data, from initial assessment through planning, execution, testing, and post-migration monitoring. It exists to make sure nothing gets discovered for the first time during a live migration.
What are the 7 steps of a cloud migration model?
Assess, plan, design, migrate, test, optimize, and monitor and manage. Most well-run cloud migrations follow a version of these seven stages regardless of the specific cloud platform involved.
What are the 7 R’s of cloud migration?
Rehost, relocate, replatform, repurchase, refactor, retire, and retain. This framework expanded from Gartner’s original 5 R’s as AWS added the retire and retain strategies between 2016 and 2017.
What are the 5 R’s in cloud migration?
The original 5 R’s, introduced by Gartner in 2010, are rehost, refactor, revise, rebuild, and replace. This was the first widely used framework for classifying cloud migration strategies, later expanded into the 7 R’s model used today.
How long does a cloud migration take?
Timeline depends heavily on the number of systems involved, their complexity, and how much testing the business requires before going live. A single application migration can take days, while a full infrastructure migration can take weeks or months when phased properly.
Do I need a backup before migrating to the cloud?
Yes, always. A full backup before migration is the single most important item on this checklist, since it’s what makes a migration reversible if something goes wrong partway through.