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.

Discuss modernization →
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.