Cloud Migration Checklist: 12 Steps for a Secure and Successful Transition
Cloud technology can help businesses improve flexibility, accessibility, collaboration, scalability, and operational efficiency. However, moving systems and data to the cloud without proper planning can create security issues, unexpected costs, downtime, and performance problems. A successful cloud migration is not simply a matter of transferring files from an internal server to an online platform. It requires a clear understanding of the business’s applications, data, security requirements, technical dependencies, users, vendors, and long-term goals. This cloud migration checklist explains the essential steps organizations should take before, during, and after moving their technology environment to the cloud. Businesses can also work with DLAN Group to evaluate their current technology environment and build a secure, scalable, and business-focused cloud strategy. What Is Cloud Migration? Cloud migration is the process of moving applications, data, workloads, infrastructure, or business systems from an on-premises environment to a cloud platform. It can also involve moving: The scope of a migration can range from moving a single business application to transforming the company’s complete technology environment. Why Businesses Move to the Cloud Organizations usually adopt cloud technology to improve one or more areas of their operations. Common objectives include: Cloud adoption should support measurable business goals rather than being treated as a technology trend. The strongest cloud initiatives are usually connected to a wider plan for building a future-ready business. Why Cloud Migrations Fail Cloud migration projects may fail or underperform when businesses: These problems can lead to business disruption, performance issues, compliance risks, security incidents, and higher operating costs. A structured cloud migration checklist helps organizations address these risks before they affect operations. Cloud Migration Checklist for Growing Businesses 1. Define the Business Case Before selecting a cloud provider or migration method, determine why the organization wants to move to the cloud. Possible business goals may include: Each objective should be specific enough to measure. For example, instead of setting a broad goal such as “improve efficiency,” the business might aim to: DLAN Group’s guide to digital innovation for modern businesses explains why technology investments should remain connected to operational outcomes. 2. Assess the Current Technology Environment Create a complete inventory of the organization’s current technology assets. This should include: The assessment should identify which systems are business-critical, outdated, underused, duplicated, or no longer required. This process may uncover hidden operational challenges that should be resolved before migration. 3. Map Application Dependencies Business applications rarely operate independently. An application may depend on: Migrating one application without understanding its dependencies can interrupt other business processes. Create a dependency map showing how applications, databases, users, integrations, networks, and vendors are connected. Systems with complex dependencies may need to be migrated together or redesigned before being moved. 4. Classify Applications and Workloads Not every application should be migrated in the same way. Group applications according to their: Each workload can then be assigned a suitable migration approach. Common options include: Rehosting The application is moved to cloud infrastructure with minimal changes. This may provide a faster migration but does not always deliver the full benefits of cloud technology. Replatforming The application receives limited modifications to improve compatibility or performance in the cloud. Refactoring The application is redesigned or rebuilt to use cloud-native capabilities. This may deliver greater flexibility but usually requires more time and investment. Replacing The existing system is replaced with a modern cloud-based application or SaaS platform. Retaining The application remains in its current environment because migration is not currently practical or valuable. Retiring The application is removed because it is outdated, duplicated, unsupported, or no longer required. 5. Choose the Right Cloud Model Businesses can choose from several cloud deployment models. Public Cloud Infrastructure and services are delivered through a third-party cloud provider. Public cloud platforms can offer flexibility, broad service availability, and easier scalability. Private Cloud Cloud infrastructure is dedicated to one organization. This may provide greater control but can require more management and investment. Hybrid Cloud Some systems remain on-premises or in a private environment while others operate in the public cloud. A hybrid model may be useful when certain workloads require greater control, local access, or gradual migration. Multi-Cloud The business uses services from more than one cloud provider. This can reduce dependence on one platform but may also increase complexity, governance requirements, and cost-management challenges. The right model depends on business goals, technical requirements, security needs, budget, and internal capabilities. 6. Review Security and Compliance Requirements Security must be included from the beginning of the migration process. The organization should identify: The cloud environment should include appropriate protections such as: Cloud providers typically secure the underlying platform, but customers remain responsible for many areas, including user access, data protection, application configuration, and security settings. DLAN Group’s cybersecurity-focused business ecosystem emphasizes the importance of secure infrastructure, protected users, and reliable digital operations. 7. Calculate the Total Cost of Cloud Migration Cloud platforms can reduce some infrastructure expenses, but they do not automatically reduce total technology costs. A realistic budget should include: Businesses should also estimate future consumption as users, applications, data, and transactions increase. Without cost controls, unused resources, oversized systems, duplicate services, and unnecessary data storage can increase monthly expenditure. 8. Select the Right Migration Partners Some businesses can manage limited migrations internally. More complex environments may require support from cloud architects, cybersecurity professionals, application specialists, network engineers, and managed service providers. When evaluating a migration partner, ask: Organizations should also avoid creating unnecessary complexity by using too many disconnected providers. A clear vendor consolidation strategy can improve accountability and coordination. 9. Create a Migration Roadmap The migration roadmap should explain: A phased migration is usually safer than moving every system at once. The business may begin with: Experience from the first phase can then improve later migrations. 10. Prepare Data for Migration Before transferring data, review its quality, ownership, sensitivity, and business value. The preparation process may involve: Moving unnecessary or poor-quality data can increase costs and carry existing problems into the new environment. 11. Create a Backup and Rollback Plan
