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Application Re-Platforming & Refactoring

Legacy System Software Modernization

We transform aging, monolithic, and high-maintenance legacy software into modern, cloud-native microservices architectures, cutting operating costs by 60% with zero business disruption.

Modernization Impact Metrics

Infrastructure Cost ReductionEliminate legacy licensing & server overhead
60%
Faster Feature VelocityModern CI/CD automated deployment pipelines
5x
Zero-Downtime Cutover SLAStrangler Fig pattern & dual-write data sync
100%
Data Loss Migration GuaranteeChange Data Capture (CDC) & checksum validation
0
Business Drivers

Why Upgrade Your Legacy System

Eliminate technical debt bottlenecks and unlock fast market velocity for your business.

Crushing Tech Debt & Maintenance Costs

Legacy systems consume up to 80% of IT budgets just to keep servers running without adding business value.

Audit Crushing Risks

Monolithic Bottlenecks & Slow Velocity

Tightly coupled monolithic codebases slow down team velocity, making simple feature updates take months.

Audit Monolithic Risks

Cloud & API Integration Barriers

Outdated platforms cannot connect with modern AI models, cloud microservices, or third-party SaaS APIs.

Audit Cloud Risks

Security & Compliance Vulnerabilities

Unsupported legacy runtimes leave your company exposed to ransomware, OWASP bugs, & compliance penalties.

Audit Security Risks

Frustrating Desktop & Web UI/UX

Clunky interfaces frustrate employees, increase error rates, and reduce customer retention.

Audit Frustrating Risks

Shrinking Talent Pool for Old Stacks

Finding engineers for COBOL, VB.NET, or Java 6 becomes increasingly difficult and expensive.

Audit Shrinking Risks
Core Capabilities

Software Modernization Practice

From Strangler Fig migrations to microservice refactoring, Next.js 15 UI, and CDC data streaming.

Zero-Risk Pattern

Strangler Fig Migration Strategy

We avoid high-risk "big-bang" rewrites. Using the proven Strangler Fig pattern, we incrementally replace legacy services behind an API Gateway until the old system is safely retired with zero downtime.

Key Architectural Specifications
Incremental microservice extraction behind API Gateways
Dual-write shadow data validation & CDC streaming
Zero application downtime during feature cutovers
Continuous fallback capabilities during migration phases

Modernization SLA Standards

  • 60% infrastructure cost reduction guarantee
  • 100% zero-downtime cutover (Strangler Fig pattern)
  • Change Data Capture (CDC) live data reconciliation
  • 100% intellectual property & code repo ownership
Modernization Execution Lifecycle

How We Modernize Software

A disciplined, zero-downtime engineering lifecycle from legacy audit to cloud cutover.

01

Legacy Audit & Tech Debt Discovery

We inspect source code, database schemas, security gaps, and non-functional bottlenecks to map technical debt.

02

Target Architecture & Migration Roadmap

Select the optimal 7 R’s approach (Rehost, Replatform, Refactor) and design bounded microservices contexts.

03

Strangler Fig Incremental Sprints

2-week sprint development building modern microservices behind an API Gateway while keeping legacy systems running.

04

Shadow Execution & CDC Data Sync

Run live data streams through CDC pipelines, comparing legacy output against new microservice responses.

05

Zero-Downtime Production Cutover

Execute live DNS and API Gateway traffic switching with zero user interruption and instant fallback safety.

06

Decommissioning & APM Telemetry

Safely decommission legacy servers, establish 24/7 Sentry error tracking, and provide ongoing SLA maintenance.

Technology Stack

Legacy vs Modern Tech Stacks

ASP.NET WebFormsVB.NETJava 6/7COBOLPHP 5.xSilverlightMonolithic SQL
Client Advisory & FAQs

Software Modernization FAQ

Answers to common questions regarding Strangler Fig patterns, zero downtime, and the 7 R's of modernization.

We use the Strangler Fig migration pattern alongside Change Data Capture (CDC). Instead of shutting down the legacy system, we route traffic through an API Gateway. New microservices process live requests in parallel, verifying data accuracy before switching traffic smoothly without dropping a single user session.

Interconnected Capabilities

Explore Related Practice Areas

Discover interconnected engineering capabilities, strategy practices, and cloud solutions.

Custom Architecture

Software Development

Bespoke enterprise software applications built for performance, security, and scalability.

Explore Software
CI/CD & Terraform

DevOps Consulting

Automate CI/CD pipelines, Kubernetes container orchestration, and Infrastructure as Code.

Explore DevOps
App Management

Application Services

Full-lifecycle custom application development, modernization, API integration, and maintenance.

Explore Application
Rapid Prototyping

MVP Development

Fast-track product launches with high-velocity 6-12 week Minimum Viable Product engineering.

Explore MVP
Next.js 15 & React

Web Development

High-performance Next.js 15 web applications engineered for speed, SEO, and user conversion.

Explore Web
iOS & Android

Mobile Development

Cross-platform React Native & native mobile apps engineered for fluid 60fps UX.

Explore Mobile
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Direct Advisory Contact

Direct Hotline
+254 0181 742 815
Email Inquiry
info@azarous.co.ke
Headquarters
Nairobi, Kenya
RAPID RESPONSE GUARANTEE

NDA & Proposal within 24 Hours

All client project briefs are protected under strict mutual Non-Disclosure Agreements (NDA) prior to technical architectural review.