What is Cloud Migration?
Last updated: April 14, 2026
Definition
Cloud migration is the process of moving applications, data, workloads, and IT resources from on-premises infrastructure to cloud computing environments provided by AWS, Azure, or Google Cloud. Organizations also migrate between cloud providers or adopt hybrid configurations to gain scalability, reduce capital expenditures, and access advanced cloud-native services without maintaining physical data centers.
Key Facts
- Also known as: Cloud transition, datacenter migration, workload migration, cloud adoption
- Category: Cloud Infrastructure
- Migration frameworks: Gartner 7 Rs (Rehost, Replatform, Refactor, Repurchase, Rebuild, Retain, Retire)
- Key providers: AWS (Migration Hub, Application Migration Service), Microsoft Azure (Azure Migrate), Google Cloud (Migration Center), Red Hat Ansible Automation Platform
- Security model: Shared responsibility (provider secures infrastructure, customer secures data and workloads)
How Cloud Migration Works
Cloud migration unfolds across five phases. The assessment phase evaluates current infrastructure, maps application dependencies, and determines cloud readiness using provider-specific tools or discovery platforms. The planning phase creates a detailed roadmap that prioritizes workloads, selects a migration strategy from Gartner's 7 Rs (rehosting for speed, replatforming for targeted optimization, or refactoring for cloud-native transformation), and establishes security and compliance requirements.
The migration phase executes the actual transfer. Organizations typically start with pilot applications to validate the process before scaling to production workloads. Automation tools like Red Hat Ansible or AWS Application Migration Service reduce manual errors and accelerate timelines. The operate phase manages workloads in the cloud environment, monitoring performance and verifying compliance under the shared responsibility model where providers secure infrastructure while customers secure data and workloads.
The optimize phase is continuous. Teams right-size resources, implement cost controls, adopt cloud-native features like auto-scaling, and refine architectures based on actual usage patterns. This phase transforms migration from a one-time project into an ongoing operating model supported by managed cloud infrastructure services.
Why Cloud Migration Matters
Cloud migration shifts IT spending from large upfront capital investments in physical hardware to flexible operational expenses tied directly to usage. By 2027, 90% of businesses worldwide will adopt a hybrid cloud approach (Gartner, 2024), making migration decisions critical for competitive positioning. Organizations migrate to eliminate the constraints of physical data centers (fixed capacity, geographic limitations, hardware refresh cycles) and access capabilities that would be prohibitively expensive to build internally (global content delivery, AI/ML infrastructure, instant disaster recovery across regions).
Migration addresses core IT challenges: cost unpredictability, inability to scale quickly, and difficulty attracting talent skilled in legacy systems. The migration services market is projected to grow from $21.66 billion in 2025 to $234.28 billion by 2035 (Precedence Research, 2026), driven by organizations modernizing infrastructure to support AI workloads and hybrid work models. Texas-based companies increasingly turn to specialized cloud migration consulting and implementation partners to navigate the technical complexity while maintaining business continuity.
Cloud Migration vs. Cloud-Native Architecture
| Aspect | Cloud Migration | Cloud-Native Architecture |
| Primary function | Moving existing systems to cloud | Building applications for cloud from scratch |
| Scope | Infrastructure transition process | Application design philosophy |
| Used by | IT operations, infrastructure teams | Development teams, architects |
| Key difference | Process with 7 strategies | Target architectural pattern |
| When to use | Transitioning legacy workloads | Designing new applications |
Cloud migration is the journey that moves workloads to the cloud, while cloud-native architecture is the destination design pattern that fully exploits cloud capabilities through microservices, containers, and automation.
Common Misconceptions
Cloud migration is not a one-time project. The optimize phase is continuous as organizations mature their cloud operations, right-size resources, and adopt new cloud-native capabilities over time.
Cloud migration does not guarantee cost savings without governance. Organizations achieve the projected 20-30% cost reduction only when they implement FinOps practices, right-size resources, and avoid overprovisioning from the start.
Frequently Asked Questions
The Gartner 7 Rs are rehosting (lift and shift), replatforming (targeted optimizations), refactoring (cloud-native transformation), repurchasing (SaaS replacement), rebuilding (rewrite), retaining (keep on-premises), and retiring (decommission). Organizations choose based on objectives, complexity, and desired optimization.
Five phases: assess (evaluate infrastructure), plan (create roadmap), migrate (execute transfer with pilots), operate (manage cloud workloads), and optimize (continuous improvement and cloud-native adoption).
Key challenges include application dependencies, legacy incompatibility, cost overruns from overprovisioning, vendor lock-in, data security during transfer, compliance under shared responsibility, skills gaps, and minimizing downtime.
