Application Innovation
Application Migration Services
Move applications and their data to the cloud or a new platform with careful dependency mapping, wave planning and rehearsed cutovers that keep downtime and surprises to a minimum.
Move Applications with Confidence, Not Guesswork
Data center contracts end, hardware reaches end of life, licensing costs rise or the business simply needs the elasticity and managed services of the cloud. Whatever the trigger, migrating applications is rarely as simple as copying servers. Hidden dependencies, hard-coded IP addresses, licensing restrictions, latency between components and large databases that cannot be offline for long all turn a straightforward plan into a series of weekend emergencies.
Hanoi Technology plans and executes migrations that are boring in the best sense. We discover every application and dependency, choose the right path for each workload, group them into migration waves, rehearse cutovers and validate performance and functionality before and after the move. Because we are also an application engineering company, we can adapt code where needed, from configuration changes to replatforming onto managed services.
The Challenge
What Makes Application Migration Risky
Migration problems usually come from what was not known before the move.
Unknown Dependencies
Applications talk to databases, file shares, batch jobs and other systems in ways nobody documented, and moving one breaks another.
Downtime Constraints
Critical applications and large databases need cutover windows of minutes or hours, not days, which requires careful replication planning.
Performance Surprises
Applications that worked well on-premises slow down after migration because of latency, sizing or chatty communication between tiers.
Cost Overruns After the Move
Lifted-and-shifted workloads running on oversized instances can cost more in the cloud than they did on-premises.
Business Value
Benefits of a Well-Planned Migration
Minimal Business Disruption
Rehearsed cutovers and rollback plans keep downtime within agreed windows.
Exit from Aging Infrastructure
Retiring end-of-life hardware and data center contracts reduces operational risk and cost.
Right-Sized Cloud Costs
Sizing based on actual usage, reserved capacity and managed services keeps cloud spending under control.
Improved Resilience
Multi-zone architectures, automated backups and infrastructure as code improve availability and recovery.
A Platform for Modernization
Once in the cloud, applications can adopt managed databases, containers, serverless and AI services step by step.
Security and Compliance by Design
Landing zones with identity, network, logging and encryption controls give migrated workloads a secure foundation.
Migration Is the Start, Not the Finish
Moving an application to the cloud creates the opportunity to improve it. The most successful programs migrate quickly with the least change necessary for each workload, then optimize and modernize in the cloud, where managed services make improvements faster and cheaper.
Our Services
Hanoi Technology’s End-to-End Application Migration Services
Migration services from discovery to post-migration optimization.
Discovery and Dependency Mapping
We inventory servers, applications, databases and integrations using discovery tools and interviews, and map communication between components.
- Application and infrastructure inventory
- Dependency maps
- Migration readiness assessment
Migration Strategy and Wave Planning
We select a strategy for each application, such as rehost, replatform or refactor, and group workloads into waves based on dependencies, risk and business calendars.
- Per-application migration strategy
- Wave plan and schedule
- Business case and cost estimate
Landing Zone Preparation
We prepare the target environment with accounts or subscriptions, networking, identity, security controls, logging and infrastructure as code.
- Landing zone design and build
- Network and identity setup
- Infrastructure-as-code templates
Application and Data Migration
We replicate servers and databases, migrate files and adapt configurations or code where needed, using native migration services and proven tools.
- Server and database replication
- Configuration and code adaptations
- Data validation reports
Testing and Cutover
We run functional, performance and integration tests, rehearse cutovers and execute go-live with defined rollback criteria.
- Test plans and results
- Cutover runbooks and rehearsals
- Go-live and rollback plans
Hypercare and Optimization
We support applications closely after migration, resolve issues quickly and right-size resources to optimize performance and cost.
- Hypercare support
- Performance and cost optimization
- Operations handover
Our Approach
Our Application Migration Methodology
A structured approach that reduces surprises at every stage.
- 01
Assess
We discover the application landscape, map dependencies, capture performance baselines and identify technical and licensing constraints.
Deliverables: Inventory and dependency maps · Performance baselines
- 02
Plan
We define the migration strategy for each application, group them into waves and agree cutover windows with business owners.
Deliverables: Migration strategy · Wave plan and timeline
- 03
Prepare
We build the landing zone, set up migration tooling and run a pilot migration of a lower-risk application to validate the process.
Deliverables: Ready target environment · Pilot migration results
- 04
Migrate and Validate
We migrate wave by wave, rehearse cutovers, test thoroughly and execute go-live with rollback plans in place.
Deliverables: Migrated applications · Test and validation reports
- 05
Optimize and Operate
We provide hypercare, tune performance and cost and hand over to your operations team or continue as a managed service.
Deliverables: Optimization report · Runbooks and handover
Use Cases
Application Migration Use Cases
Common migration scenarios we support.
Data Center Exit
An organization with an expiring data center contract moves its application estate to AWS or Azure in planned waves.
Line-of-Business Application to the Cloud
A company moves its ERP-adjacent applications and databases to managed cloud services to reduce maintenance.
Database Platform Migration
A business migrates from on-premises SQL Server or Oracle to managed services such as Amazon RDS, Azure SQL or Cloud SQL.
Cloud-to-Cloud Migration
An organization moves workloads between cloud providers to consolidate platforms or align with strategic agreements.
VMware Estate Migration
A company migrates virtual machines from VMware environments to cloud-native compute or managed VMware offerings.
Containerizing During Migration
A software company moves its web applications into containers on Kubernetes or managed container services as part of the migration.
Technology
Migration Tools and Platforms
We use native cloud migration services and proven third-party tools.
- AWS Application Migration Service
- AWS Database Migration Service
- AWS Migration Hub
- Azure Migrate
- Azure Database Migration Service
- Google Cloud Migration Center
- Migrate to Virtual Machines
- Terraform
- Ansible
- Docker
- Kubernetes
- Amazon RDS
- Azure SQL Database
- Cloud SQL
- Datadog
- Grafana
Platforms
Deliver Application Migration on Your Preferred Platform
Why Hanoi Technology
Why Organizations Choose Hanoi Technology
Senior, Cross-Functional Teams
Strategy, data, AI, cloud and engineering specialists work as one team, so nothing is lost between hand-offs.
Proven Delivery
More than 50 projects delivered for clients in North America, Europe and Asia-Pacific.
Radical Transparency
A written update every week and a demo of working software every sprint, so you always know where things stand.
Cost-Effective Global Delivery
Experienced engineers from our Hanoi delivery hub, with working-hour overlap for every major time zone.
Success Story · Food delivery
AI dispatch and live tracking for a food delivery startup
A fast-growing urban food delivery startup was losing customers to slow deliveries at peak times. We built AI order dispatching and connected restaurants, drivers and customers in real time.
Read the Full StoryMore Success Stories
Logistics
−25%operational costsRoute optimization and fleet visibility for a regional logistics company
A regional delivery company handling thousands of shipments a day was planning routes and dispatching by hand. We built dynamic route optimization, a fleet dashboard and a driver app.
Resources
Featured Resources
Industry trends and practical guidance to help you get more value from data, AI and technology.
FSMA 204 After the Delay: Using Shipment Monitoring to Get Traceability-Ready by 2028
The FDA Food Traceability Rule deadline moved to July 2028, but the data work is large. Here is how to use shipment monitoring and event data to get ready without wasting the extra time.
CSRD After the Omnibus: What the Revised ESRS Mean for Reporting From 2027
The Omnibus and the simplified ESRS reshaped EU sustainability reporting in 2026. Here is who is in scope, what changed in the standards and how to adapt your data and process.
OpenTelemetry in 2026: Building a Vendor-Neutral Observability Strategy
OpenTelemetry has become the default way to collect telemetry. Here is what changed in 2026 and a practical roadmap for a vendor-neutral observability stack.
Plan a Migration Without the Surprises
Tell us which applications you need to move and your timeline. We will reply within 24 hours and arrange a free consultation to outline a migration approach.
Application Migration FAQ
How do you decide how to migrate each application?
We evaluate each application’s business value, technical architecture, dependencies, licensing, performance needs and future roadmap, then choose a strategy such as rehost, replatform, refactor, repurchase, retain or retire. Rehosting is fastest when time is critical. Replatforming to managed databases or containers adds benefits with moderate effort. Refactoring is reserved for applications where the business case justifies deeper change.
How much downtime should we expect?
Downtime depends on the application, data volume and migration method. With continuous replication of servers and databases, many cutovers can be completed within a planned maintenance window of a few hours or less. Applications that cannot replicate easily may need longer windows. We define the expected downtime for each application during planning, rehearse the cutover and agree rollback criteria in advance.
How do you handle dependencies between applications?
We combine automated discovery tools, which observe network connections between servers, with interviews and configuration reviews to build dependency maps. Tightly coupled applications are grouped into the same migration wave, and where that is not possible we plan network connectivity, latency testing and temporary integration paths between on-premises and cloud environments to keep everything working during the transition.
Will our applications cost more in the cloud?
They can if workloads are moved without right-sizing. We base sizing on measured usage rather than current server specifications, use autoscaling and reserved capacity where appropriate, and recommend managed services that reduce operational effort. After migration, we review utilization and adjust resources. We also produce a cost estimate during planning so you can compare total cost of ownership before committing.
How do you keep data secure during migration?
Data is encrypted in transit and at rest, replication uses secure channels such as VPN or private connectivity, and access to migration tools is limited to named accounts with least privilege. The target landing zone includes identity, network, logging and encryption controls before any workload arrives. We validate data integrity after migration and follow your security and compliance policies throughout.
How long does an application migration program take?
A single application with few dependencies can often be migrated within a few weeks once the landing zone is ready. Larger estates are migrated in waves over several months, depending on the number of applications, complexity and business calendar constraints. Discovery and planning typically take a few weeks and dramatically reduce risk in the execution phase.