Modernize legacy applications — monolith to microservices, replatform to cloud-native, refactor for scale — without rewriting everything.
Talk to a modernization architectLegacy applications are a liability — they're hard to deploy, hard to scale, hard to hire for, and impossible to extend without breaking something. But a full rewrite is risky, expensive, and usually fails. Most modernization projects either do too little (lift-and-shift and call it 'modernized') or too much (full rewrite, 2 years late, 3x over budget).
CB4UHost's Application Modernization service takes the middle path. We modernize incrementally — extract the most painful services first, replatform to cloud-native where it pays, refactor where it's needed, and leave the parts that work well enough alone. The strangler-fig pattern is our default: extract services over time, decommission the monolith piece by piece.
We've modernized Java monoliths (Spring Boot extraction), .NET Framework apps (.NET Core migration), PHP apps (Laravel migration), and Node.js apps (TypeScript migration). We know which patterns work and which don't.
Every engagement ends with modernized services, automated tests, deployment pipelines, and a roadmap for continued modernization.
We assess your app and recommend a strategy — rehost, replatform, refactor, or extract services.
We extract high-value services from the monolith using the strangler-fig pattern.
We replatform to cloud-native services (managed DB, managed cache, serverless) where it pays.
We refactor code for testability, performance, and maintainability — without changing behavior.
We add unit, integration, and end-to-end tests so refactoring is safe.
Roadmap for continued modernization + runbooks for the new services.
We assess the app and recommend a modernization strategy.
We extract services using the strangler-fig pattern.
We replatform to cloud-native services and refactor code.
We add automated tests and deploy via CI/CD.
We hand over runbooks and a roadmap for continued modernization.
Modernize, almost always. Full rewrites fail 60-70% of the time. Modernization (incremental extraction and refactoring) succeeds much more often and delivers value continuously rather than after 2 years. We'll recommend based on your app's specific issues.
Instead of rewriting the monolith, you extract services from it piece by piece. Each extracted service runs in production while the rest of the monolith continues to run. Over time, the monolith shrinks until it can be decommissioned. Lower risk, continuous value.
Yes — that's the whole point of incremental modernization. We extract services one at a time, with the monolith still in production. Users see improvements (faster features, fewer bugs) without disruption.
It depends on the app's size and complexity. A typical engagement: 3-6 months for the first batch of services, with a roadmap for continued modernization over 12-24 months. We deliver value continuously, not all at the end.
CI/CD pipelines, infrastructure-as-code, GitOps, and observability — so your team ships faster without breaking things.
Containerize legacy apps and orchestrate them on Kubernetes — Docker, EKS, AKS, GKE, or self-hosted K8s.
Design and implement MACH architecture — Microservices, API-first, Cloud-native, Headless — for composable digital experiences.
Tell us about your project. We'll come back with a scoped proposal and a fixed-fee quote.
Talk to a modernization architect