When legacy .NET Framework code slows releases and hides value behind outdated APIs, we refactor any module into lean .NET 8 services that compile fast, run efficiently, and provide clean gRPC or REST endpoints. Automated dependency scanning, precise test harnesses, and incremental rollout ensure that every feature is traceable, while optimized container images reduce infrastructure spend by up to 35%. Through legacy app modernization, your team deploys features with a modern toolchain without impacting revenue.
Why It Matters
Transform Legacy Systems Into a Strategic Advantage
Legacy systems include more than outdated code. They involve rigid workflows, outdated platforms, and tangled integrations that block progress and slow execution.
Outdated infrastructure and legacy data systems fragment operations, increase costs, and hide risk in everyday processes. Scaling, securing, and evolving core systems becomes harder with every quarter, until growth begins to stall.
According to Forrester, 72% of IT decision-makers say legacy systems make it harder to meet customer expectations and slow down digital product delivery.
It’s time to modernize with clarity and measurable impact.
With Devox Software, modernization aligns directly with business outcomes. Each system upgrade supports strategic goals, removes friction at every level, and builds an adaptive architecture built for growth, resilience, and long-term value.
What We Offer
Legacy Modernization Services We Provide
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.NET Migration
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ASP.NET Migration
Monolithic ASP.NET websites can no longer meet today’s real-time UX and elastic traffic requirements. We decompose the user interface, authentication, and business logic into Razor, Blazor, or single-page front-ends supported by lean APIs. The result is faster load times, smooth horizontal scaling, and edge-ready security headers from day one. Controlled blue-green deployments and zero-downtime transitions keep customers engaged and operations stable.
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Cloud Migration
Every quarter spent on-premise ties up capacity growth that can’t adapt to market demand. We design your path to Azure, AWS, or hybrid cloud by packaging workloads as code, embedding compliance from the start. Your platform gains elastic scaling, built-in observability, and cost insights that fuel your next product sprint.
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Azure Migration Consulting
Code still running on on-prem servers carries a hidden cost in maintenance, latency, and reduced agility. Our Azure legacy migration strategy allocates the most cost-effective mix of App Service, AKS, Functions, and Cosmos DB to each workload, reinforced by Infrastructure as Code (IaC) and automated guardrails. Predictable performance baselines, built-in observability, and built-in compliance keep your engineers focused on product value while the platform adapts to market demand.
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Technology Stack Upgrade
When outdated runtimes and legacy libraries throttle performance, we elevate every component to modern frameworks, such as .NET 8, Java 21, or Rust-based microservices, and containerize them with distroless images and policy-as-code scanning. The release cadence accelerates, the memory footprint shrinks, and the security headers comply with today’s Zero Trust standards while the existing SLAs remain intact.
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Application Re-architecture
Complex monoliths turn simple functions into months of negotiation. Our engineers decompose domain boundaries, extract high-throughput modules into event-driven services, and map the gravity of data to a purpose-built store. The result is a modular architecture that scales horizontally, recovers quickly, and encourages continuous experimentation without requiring a rewrite of the underlying code.
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Application Re-engineering
We extract business logic from legacy codebases and restructure it into modular, API-driven components supported by event streaming and testable contracts. Each refactored part is delivered via blue-green pipelines, maintaining SLAs while improving performance, maintainability, and auditability in a single pass.
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AI Solution Accelerator
Our AI Accelerator™ transforms generative models into a force multiplier for modernization. We map your codebase into a living knowledge graph, highlight entropy hotspots, and generate repeatable refactoring recipes supported by automated testing. This creates a clear path for low-risk modules, enabling architects to undertake in-depth redesigns. The result: shortened deadlines, increased coverage, and a migration that learns and improves with every commitment.
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Legacy Application Modernization
Legacy modernization creates lasting benefits. We update runtimes, re-architect workflows and integrate AI to deliver consistent, high-impact results. Every step is linked to performance — faster releases, improved resilience and reduced friction across the delivery pipeline. This is engineering with vision. From optimizing architecture to enabling real-time insights, we build long-term value into every modernization initiative.
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Legacy Migration
Our engineers orchestrate the transition from brittle monoliths to containerized .NET 8 and Java 21 services on Kubernetes by mapping domain boundaries, writing data in parallel until parity is proven, and enabling new paths behind feature flags. Hence, users experience continuous service while the platform gains flexibility for future change.
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Cloud Optimization
Once workloads land in the cloud, we unlock further value with automated rightsizing, FinOps guardrails, and telemetry-based auto-scaling that adjusts spend to actual demand. Policy-as-code ensures transparent governance, and our AI Accelerator™ detects latent inefficiencies.
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Cloud Strategy & Assessment
Before moving the first workload, our legacy data migration strategy includes a comprehensive assessment of architectures, dependencies, and cost vectors. The result is a step-by-step roadmap with risk gates, rollback points, and budget clarity that guides any subsequent migration decision.
Our Approach
Legacy Modernization Strategies That We Execute
Our software modernization services take a holistic view of your legacy environment, encompassing applications, infrastructure, data systems, and integrations. We map dependencies, performance bottlenecks, and operational risks into a modernization strategy aligned with long-term business goals.
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Defining strategic modernization goals
We align modernization efforts with your organization’s strategic priorities — whether faster releases, lower operating costs, improved compliance, or increased scalability.
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Assessment and prioritization of legacy systems
From monolithic applications and outdated databases to brittle APIs and inadequate infrastructure, we assess each component for its criticality, risk, and urgency for modernization.
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Uncovering technical debt and systemic risks
Our data modernization services use advanced discovery tools and system diagnostics to uncover hidden dependencies, outdated components, and architectural constraints that impact performance.
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Designing a target architecture
We design a scalable, cloud-native architecture that supports agility, encompassing event-driven systems, serverless models, modernized data platforms, and secure API layers.
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Delivering a step-by-step modernization roadmap
You get a step-by-step execution plan with timelines, KPIs, fallback protocols, and clear deliverables for each wave of modernization. The roadmap is actionable, predictable, and tailored to minimize risk while maximizing business continuity.
Value We Provide
Why Choose Devox Software as a Legacy Modernisation Partner
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Proven Cloud-First Execution
Devox Software has years of experience in transitioning complex legacy environments to modern cloud ecosystems. From mainframe decoupling to multi-region Kubernetes orchestration, our architects tailor each migration to achieve business-critical outcomes. We calibrate performance, compliance, and cost efficiency with cloud-native services in AWS, Azure, and GCP, ensuring every asset earns its place in your future state.
02
Tech Stack Built to Scale
Every modernization strategy we deliver integrates next-generation DevOps, serverless paradigms, and infrastructure-as-code. With Terraform, Pulumi, and GitOps workflows, your systems gain agility and auditability from the first commit. Layered automation — CI/CD pipelines, policy-as-code, AI-driven QA — creates a deployment engine that keeps up with your pace of innovation.
03
Enterprise-Grade Engineering Force
Legacy modernization is not a service area for us; it’s a core competency. Our senior engineers bring deep expertise in legacy systems modernization, platform re-architecture, data restructuring, and security hardening at scale. We implement change in regulated industries, large portfolios, and mission-critical platforms. Every decision is focused on impact, and every plan is centered on measurable business acceleration.
04
Accelerated Execution Through Tools and Patterns
We reduce delivery time and engineering overhead through a structured accelerator stack — automated code discovery, dependency mapping, test harness scaffolds, and repeatable refactoring pipelines. Our toolchain cuts weeks of manual analysis. Our execution patterns remove decision drag. And our automation layer keeps every step testable, observable, and aligned with release velocity. What used to take quarters, ships in months — with traceability, rollback safety, and budget clarity built in.
Under NDA
FINTECH
Automated VAT Filing & E‑Invoicing Platform for SAP-Driven Operations
A full-cycle SAP-integrated platform that automates VAT filings, SAF-T reporting, and e-invoicing via KSeF and PEPPOL for a multinational enterprise.
Additional Info
Core Tech:
- SAP S/4HANA
- ABAP
- SAP PI/PO
- SAP Cloud Integration
- Node.js
- Angular
- PostgreSQL
- Redis
- Docker
- Azure
Country:
Poland
Under NDA
FINTECH
FinTech Platform for Invoicing and Secure Transactions
A fintech platform that safeguards online payments using encryption, MFA, and AI-driven fraud detection.
Additional Info
Core Tech:
- .NET microservices
- Angular 8
- PostgreSQL
- Multi-Factor Authentication (MFA)
- End-to-End Encryption
- AI-based Fraud Detection
Testimonials
Testimonials
Sweden
The solutions they’re providing is helping our business run more smoothly. We’ve been able to make quick developments with them, meeting our product vision within the timeline we set up. Listen to them because they can give strong advice about how to build good products.
Carl-Fredrik Linné
Tech Lead at
CURE Media
United States
We are a software startup and using Devox allowed us to get an MVP to market faster and less cost than trying to build and fund an R&D team initially. Communication was excellent with Devox. This is a top notch firm.
Darrin Lipscomb
CEO, Founder at
Ferretly
Australia
Their level of understanding, detail, and work ethic was great. We had 2 designers, 2 developers, PM and QA specialist. I am extremely satisfied with the end deliverables. Devox Software was always on time during the process.
Daniel Bertuccio
Marketing Manager at
Eurolinx
Australia
We get great satisfaction working with them. They help us produce a product we’re happy with as co-founders. The feedback we got from customers was really great, too. Customers get what we do and we feel like we’re really reaching our target market.
Trent Allan
CTO, Co-founder at
Active Place
United Kingdom
I’m blown up with the level of professionalism that’s been shown, as well as the welcoming nature and the social aspects. Devox Software is really on the ball technically.
Andy Morrey
Managing Director at Magma Trading
Switzerland
Great job! We met the deadlines and brought happiness to our customers. Communication was perfect. Quick response. No problems with anything during the project. Their experienced team and perfect communication offer the best mix of quality and rates.
Vadim Ivanenko
COO at
Optherium
United States
The project continues to be a success. As an early-stage company, we're continuously iterating to find product success. Devox has been quick and effective at iterating alongside us. I'm happy with the team, their responsiveness, and their output.
Jason Leffakis
Founder, CEO at
Function4
Sweden
We hired the Devox team for a complicated (unusual interaction) UX/UI assignment. The team managed the project well both for initial time estimates and also weekly follow-ups throughout delivery. Overall, efficient work with a nice professional team.
John Boman
Product Manager at
Lexplore
Canada
Their intuition about the product and their willingness to try new approaches and show them to our team as alternatives to our set course were impressive. The Devox team makes it incredibly easy to work with, and their ability to manage our team and set expectations was outstanding.
Tamas Pataky
Head of Product at
Stromcore
Estonia
Devox is a team of exepctional talent and responsible executives. All of the talent we outstaffed from the company were experts in their fields and delivered quality work. They also take full ownership to what they deliver to you. If you work with Devox you will get actual results and you can rest assured that the result will procude value.
Stan Sadokov
Product Lead at
Multilogin
United Kingdom
The work that the team has done on our project has been nothing short of incredible – it has surpassed all expectations I had and really is something I could only have dreamt of finding. Team is hard working, dedicated, personable and passionate. I have worked with people literally all over the world both in business and as freelancer, and people from Devox Software are 1 in a million.
Mark Lamb
Technical Director at M3 Network Limited
FAQ
Frequently Asked Questions
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How can we avoid downtime or business risk during modernization?
Every modernization plan we deliver is built around one core promise: your operations continue to run smoothly. Before touching production, we simulate the migration in a sandbox that mirrors your live environment. Dependencies are mapped. Weak points are stress-tested. Data flows are validated end-to-end, so by the time change happens, it’s no longer new. It’s practiced.
We sequence the rollout in phases, apply canary or blue-green strategies where needed, and pair every change with real-time observability. Your team stays in control. Your users remain uninterrupted. And your business keeps moving — with zero guesswork and a fallback for every step.
Modernization doesn’t have to be risky — when it’s designed to feel familiar. We bring confidence to every transition.
Technical debt fades when every modernization decision aligns with the long-term integrity of the system.
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Are we just replacing old systems with new ones that will create fresh technical debt?
We begin by exposing entropy in your current environment — fragile modules, layered dependencies, and undocumented logic that slow down engineering. Each legacy element is traced, audited, and assessed for impact before any change is applied.
Modern components are delivered with test coverage, telemetry, and traceability built in. Every refactor moves through quality gates that enforce architectural consistency and maintain operational stability. We integrate automated validation, peer-reviewed logic transitions, and continuous monitoring to ensure that new systems remain maintainable, scalable, and secure under pressure.
The outcome: modernization that compounds in value. Fewer blind spots, cleaner boundaries, and a platform that keeps your teams shipping at speed, without inheriting new risks.
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How do we avoid trading old technical debt for new complexity?
Technical debt does not start with old code. It begins when decisions remain unchecked.
We modernize with this in mind. Before we touch a system, we uncover the assumptions within it — the tacit contracts between modules, the implicit workflows in scripts, the brittle logic that no one wants to change. Our process creates a decision path: what should be refactored, what should be decommissioned, and what should be redeveloped. Each migration path we devise includes automated linting, architectural fitness functions and CI/CD gates that validate behavior, performance, and coupling — continuously, not just once.
This approach creates a margin of safety. Instead of working fast and breaking things, we work precisely and validate every step. New systems inherit clarity, not complexity. And your roadmap extends further forward — with guardrails, not regrets.
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How can we ensure that our modernization efforts actually support the long-term business plan — and not just technical hygiene?
Modernization earns its place when it serves more than just code. Every architectural decision we make is focused on achieving business outcomes — faster releases, lower total cost of ownership (TCO), and greater platform flexibility. We start by identifying where legacy friction is hindering growth: slow go-to-market (GTM), hidden costs, and unstable operations. Then we align modernization milestones with roadmap priorities. Whether it’s shortening onboarding, expanding into new markets, or enabling partner integration, your modernization story becomes a direct enabler of your strategy, traceable from refactoring decision to board-level outcome.
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What does success look like at each stage, and how do we measure real progress, not just completed tasks?
Each phase of our modernization playbook is tied to clear business signals: shorter cycle times, higher test coverage, lower defect budgets, and faster onboarding. These are not vague promises — they are measurable indicators that are tracked in real time. We define exit criteria for each phase, ensure observability across systems, and provide regular demos with real data. You’ll see progress in the form of faster deployment, improved platform stability, and stakeholder confidence, not just in the form of merged code, but in the form of regained momentum.
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Can our internal teams keep up during the transition, or will they be overloaded and disrupted by modernization?
Your teams will continue to focus on delivery. We design modernization as a parallel runway — with mirrored environments, feature flag gating, and phased rollout. By incorporating clean APIs, CI/CD pipelines, and automated regression coverage early on, we remove friction instead of adding to it. Instead of an extensive handover, we work side-by-side, documenting patterns, guiding integrations, and leaving behind tools that still work when we retire. Your team gains capacity, clarity, and faster development, not an additional burden.
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