Legacy Modernization

Replacing legacy systems without stopping operations.

Step-by-step migration from legacy software to modern architectures — without big-bang risk. Strangler pattern, API wrapping, and database migration. We modernize your IT while your business keeps running.

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What we deliver

Modernization with methodology.

Migration Analysis

Assessment of your legacy systems: technical debt, dependencies, and risks — quantified as a decision-making basis.

Strangler Pattern

Gradual replacement of individual functional areas while the legacy system continues to run — no big bang, no operational risk.

Database Migration

Safe migration of databases and data models — schema evolution, data cleansing, and validation included.

API Wrapping

Modern API layer over existing systems — enables integration of new applications without rebuilding the legacy system.

Cloud Migration

Lift-and-shift or re-architecting — we choose the right strategy for each system component.

Parallel Operation

Shadow traffic, feature flags, and gradual switchover — you migrate step by step, not all at once.

Our Approach

Modernization without risk.

01

Assessment

Complete analysis of the legacy system: code quality, architecture, dependencies, and business criticality.

02

Strategy

Migration strategy with prioritization: Which parts first? Which technology? What timeframe?

03

Step-by-Step Migration

Feature by feature, module by module — each step tested and validated before the next begins.

04

Decommission & Operations

Orderly decommissioning of the legacy system and transition to regular operation of the new system.

Why cierra

Modernization with respect for the existing.

Legacy systems aren't 'bad' — they've carried your business for years. We respect the business logic embedded in these systems and carefully transfer it to modern architectures instead of blindly reinventing it.

Ready for the next step?

Let's find out together how AI can move your business forward.

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