IG CloudOps
Modernise selectively

Azure Migration & Modernization

Use your Azure migration to improve what matters, not just move what exists. We help you choose the right migration path for each workload.

Migration is an opportunity to modernise selectively

Not every application needs to be rebuilt during migration. But some workloads should not be moved unchanged. A practical Azure migration should decide where to:

Rehost
Replatform
Refactor
Replace
Retire
Retain temporarily

Modernisation areas we review

Application hosting

Virtual machines, App Service, containers, Kubernetes or serverless options.

Databases

Managed database options, performance, backup, licensing and resilience.

DevOps pipelines

CI/CD, release automation, testing, rollback and deployment governance.

Monitoring

Application insights, logging, alerts, dashboards and support visibility.

Security

Identity, secrets, network controls, vulnerability exposure and compliance.

Resilience

High availability, backup, disaster recovery and failover planning.

When to rehost vs. modernise

Rehost when

  • The workload is stable
  • There is low business risk
  • The application has limited change budget
  • Speed matters more than optimisation
  • Current architecture is acceptable

Modernise when

  • Existing infrastructure is fragile
  • Costs are already high
  • The application needs better scaling
  • Deployment is slow or risky
  • Support is difficult
  • Security or compliance has changed
  • The workload is strategically important

Combine modernisation with cost governance to make sure efficiency gains translate to lower run cost.

Planning an Azure migration?

Before you move workloads, check the risks, dependencies and operating model. A short readiness review helps you avoid costly mistakes.

FAQs

Should every workload be modernised during migration?+
No. Modernisation is selective. Some workloads should be rehosted unchanged, others replatformed, refactored, replaced or retired.
What is replatforming?+
Replatforming means moving a workload to a managed Azure service with minimal code change — for example moving SQL Server to Azure SQL Managed Instance.
Does refactoring require a rewrite?+
Not always. Refactoring can mean containerising an app, splitting it into smaller services, or adopting App Service or Functions for specific components.
How do we decide what to modernise?+
Score workloads on business value, technical debt, change risk, scale needs and cost impact. Modernise where the return clearly justifies the work.
Can modernisation happen after migration?+
Yes. A staged approach — rehost first, modernise later — is often the right answer for time-sensitive migrations.