Application Modernization — Transform Legacy Software into Competitive Assets
Optimum Web modernizes legacy applications from Chisinau, Moldova — transforming outdated systems into modern, scalable platforms. Strangler Fig pattern: incremental migration, zero disruption.
- Framework migration — PHP 5→8.3, .NET Framework→.NET 8, AngularJS→React
- Architecture modernization — Monolith→microservices, DDD boundaries
- Cloud migration — On-premise→AWS/Azure/GCP, Docker/Kubernetes
- Database modernization — Query optimization, platform migration, replicas
- Containerization & DevOps — Docker, CI/CD pipelines, automated deployment
- Legacy code refactoring — Clean architecture, test coverage, documentation
Results: 50% faster development · 60% fewer bugs · 40% lower infrastructure costs
Our Capabilities
Legacy Code Refactoring
We transform tangled, untestable legacy codebases into clean, maintainable, and well-documented code — without rewriting from scratch. Our refactoring approach follows the Strangler Fig pattern: we gradually replace legacy components with modern implementations while keeping the application fully functional throughout the process. This includes extracting business logic into testable services, replacing deprecated libraries and frameworks, introducing automated testing where none existed, and establishing coding standards that prevent future technical debt accumulation. Typical refactoring projects reduce bug rates by 40–60% and cut new feature development time in half.
Monolith to Microservices
We help organizations break down monolithic applications into independently deployable microservices — enabling teams to develop, test, and release features independently without coordinating massive releases. Our migration strategy is pragmatic: we identify bounded contexts using Domain-Driven Design principles, define service boundaries based on business capabilities (not technical layers), implement API contracts between services, and set up event-driven communication via message brokers (RabbitMQ, Apache Kafka, Azure Service Bus). We migrate incrementally — one service at a time — with comprehensive integration testing at every stage to ensure zero data loss and zero downtime.
Cloud Migration
We migrate on-premise applications to cloud platforms (AWS, Azure, GCP) — reducing infrastructure costs, improving reliability, and enabling elastic scaling. Our migration follows a proven 6-phase methodology: Discovery (map all dependencies), Assessment (choose migration strategy per component: rehost, re-platform, or refactor), Planning (network architecture, security groups, IAM policies), Migration (data transfer, DNS cutover, rollback plan), Optimization (right-sizing instances, reserved pricing, auto-scaling rules), and Monitoring (CloudWatch, Application Insights, custom dashboards). Post-migration, our clients typically see 25–40% reduction in infrastructure costs and 99.9%+ availability.
Technology Stack Upgrade
We upgrade applications from outdated technology stacks to modern, supported frameworks — PHP 5 to PHP 8, .NET Framework to .NET 8, AngularJS to Angular 17 or React, jQuery-heavy frontends to Vue.js or React with TypeScript. Stack upgrades eliminate security vulnerabilities in unsupported software, unlock performance improvements in newer runtimes, enable access to modern libraries and tooling, and make your application attractive to top-tier developers who refuse to work with legacy technologies. We execute upgrades incrementally with parallel testing to ensure feature parity and zero regression.
Database Migration
We migrate databases between platforms (MySQL to PostgreSQL, SQL Server to Azure SQL, MongoDB to DynamoDB) and versions — with zero data loss and minimal downtime. Our migration process includes schema analysis and optimization for the target platform, data type mapping and transformation, stored procedure and trigger conversion, application query compatibility testing, and performance benchmarking. For high-availability systems, we use blue-green migration with real-time replication, achieving cutover windows as short as 5 minutes for databases with billions of records.
Containerization & DevOps
We containerize your application with Docker and orchestrate with Kubernetes — enabling consistent deployments across development, staging, and production environments. Containerization eliminates the "it works on my machine" problem, simplifies scaling, and accelerates CI/CD pipeline execution by 50–70%. Our containerization service includes Dockerfile optimization (multi-stage builds, minimal base images), Docker Compose for local development, Kubernetes manifests or Helm charts for production, CI/CD pipeline configuration (GitHub Actions, GitLab CI), and monitoring with Prometheus and Grafana.
Problems We Solve
Slow Performance
Modern architecture with caching, CDN, and optimized queries.
Outdated Technology
Migration to current frameworks with long-term support.
Security Vulnerabilities
Security audit, patching, and modern security practices.
High Maintenance Cost
Clean code, automation, and reduced technical debt.
How We Work
Assessment
Comprehensive audit of current system, dependencies, and technical debt.
Strategy
Modernization roadmap — rehost, refactor, re-architect, or rebuild.
Incremental Migration
Phased approach to minimize risk and business disruption.
Testing
Parallel testing of old and new systems to ensure feature parity.
Cutover
Planned transition with rollback capabilities.
Optimization
Performance tuning and monitoring of the modernized system.
Results You Can Expect
In maintenance costs after modernization.
Improvement with modern architecture and optimization.
Guaranteed during migration with comprehensive backup strategy.
Technologies & Tools
Frequently Asked Questions
Key indicators: rising maintenance costs, difficulty hiring developers for legacy tech, slow performance, security vulnerabilities, inability to add new features quickly, or compliance requirements. If your application is holding back business growth, it's time to modernize.
A focused modernization project takes 3-9 months depending on complexity. We use an incremental approach — delivering value in phases rather than a big-bang migration. This reduces risk and provides ROI throughout the process.
We mitigate risk through: incremental migration (not big-bang), parallel running of old and new systems, comprehensive testing, rollback capabilities, and phased cutover. Our 26+ years of experience means we've handled every type of migration challenge.
Modernization is preferred when core business logic is sound and the system works but needs updating. Rebuilding is better when the architecture is fundamentally flawed. We assess your specific situation and recommend the most cost-effective approach.
Yes, we have experience modernizing applications built with legacy PHP, .NET Framework, Java EE, jQuery, and other older technologies. We create a migration path to modern equivalents while preserving all business logic and data.
Ready to Start?Let's Discuss Your Project
Whether you need a dedicated team, a single specialist, or a complete digital transformation — we're here to help.
Or email us directly: [email protected]