Zero-Downtime Core Engineering

De-Risk & Re-Platform Your Mission-Critical Legacy Core

Break free from fragile monoliths, expensive mainframe maintenance, and legacy technical debt. Aarniz engineers phased, zero-downtime modernization strategies utilizing API wrappers, microservices, and automated testing frameworks.

Schedule Legacy Stack Audit See Migration Outcomes

Proven Modernization Metrics

  • ✓60% OPEX Reduction: Eliminate licensing costs associated with proprietary legacy hardware and runtimes.
  • ✓Zero Business Disruption: Phased Strangler-Fig coexistence ensures uninterrupted transactional processing.
  • ✓Instant API Unification: Modernize integration surfaces without touching fragile COBOL or legacy backend logic.

Core Modernization Services

Comprehensive re-platforming, API enablement, and architectural transformation.

Monolith to Microservices Decomposition

Deconstruct massive, high-friction monolithic applications into loosely coupled, independently deployable microservices using Domain-Driven Design (DDD).

API Enablement & Wrapper Architecture

Unlock siloed legacy mainframe and relational data via secure RESTful, GraphQL, and event-driven API wrappers without modifying fragile core logic.

Cloud Re-Platforming & Containerization

Migrate on-prem legacy services into containerized Kubernetes environments, improving resource utilization, autoscaling, and reliability.

Phased Strangler-Fig Migration

Gradually replace specific legacy capabilities with modern services side-by-side, ensuring 100% continuous uptime and zero operational risk.

Database & Schema Modernization

Modernize legacy SQL tables, stored procedures, and flat-file datastores into scalable relational, document, or distributed data warehouses.

Automated CI/CD & Test Automation

Establish automated regression test suites, container pipelines, and canary deployment patterns to accelerate feature delivery.

Battle-Tested Process

Phased De-risking Lifecycle

01

Legacy Codebase Discovery & Dependency Mapping

Analyze architectural bottlenecks, dead code, data schemas, and integration points.

02

Target Architecture & Coexistence Strategy

Design the microservices boundary, API mediation layer, and dual-run synchronization plan.

03

Iterative Strangler Fig Migration

Incremental re-engineering of discrete modules with automated regression and shadow traffic testing.

04

Legacy Decommissioning & Cutover

Full traffic switchover to the cloud-native platform with verified performance benchmarks.

Ready to Modernize Your Legacy Infrastructure?

Accelerate release velocity and cut operational overhead with zero risk to ongoing transactional continuity.

Schedule Architecture Assessment