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Should Every Legacy Application Be Migrated to the Cloud?

Creation date: Nov 5, 2026 5:55am     Last modified date: Nov 5, 2026 5:55am   Last visit date: Nov 9, 2026 7:34am
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Nov 5, 2026  ( 1 post )  
11/5/2026
5:55am
Melto Mily (meltonemily753)

Cloud migration projects often start with a list of applications that need to move. But one question deserves more attention: should all of them actually be migrated?

Some legacy applications are expensive to maintain but still support critical business operations. Others have barely been used for years, yet continue consuming infrastructure resources.

Before committing to migration, it makes sense to consider three alternatives:

  • Retire: Decommission applications that no longer provide meaningful business value.

  • Retain: Keep workloads on-premises when regulatory, hardware, or technical constraints make migration impractical.

  • Repurchase: Replace custom-built applications with SaaS solutions when the available products meet business requirements.

Moving an outdated system to the cloud without questioning its purpose can simply transfer technical debt to a more expensive environment.

Zoolatech explores these decisions in its guide to application migration to the cloud, including different migration approaches and how to evaluate individual workloads.

What's your approach? Do you assess which applications should be retired before starting a cloud migration, or does that decision usually happen later?