Legacy App Modernization
Legacy Application Modernization Services
Old systems slow you down and are risky to change. We modernise them step by step, keeping your business running while the new platform takes over.
- No big-bang rewrites
- Business keeps running
- Cloud-ready architecture
What we offer
Legacy App Modernization services
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Code & Architecture Audit
We map the system, its risks and dependencies before touching anything.
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Strangler-Pattern Migration
Replace the old system piece by piece behind the scenes.
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Re-Platform to the Cloud
Move to Azure or AWS with better security, scaling and costs.
Learn more -
Desktop to Web
Turn desktop and client-server apps into modern web applications.
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Data Migration
Clean, map and validate data so nothing is lost on the way.
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AI-Assisted Code Analysis
AI helps document and refactor old code faster and more safely.
Learn more
Our process
From idea to launch in six clear steps
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Discovery & NDA
We sign an NDA, map your goals, users and constraints, and agree on what success looks like.
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Spec & architecture
AI-assisted specifications, user stories and a scalable architecture, reviewed by senior engineers.
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UX & UI design
Wireframes and clickable prototypes you can test with real users before a line of code is written.
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Build in sprints
AI-assisted development with a working demo every two weeks, so you always see real progress.
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QA & security
Automated and manual testing, AI-assisted code review and security checks on every release.
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Launch & support
We ship, monitor and improve, with six months of free support after launch.
Related
Related services
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AI-Powered Custom Software Development
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Enterprise Software Development
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SaaS Product Development
Multi-tenant platforms with billing and analytics.
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MVP Development
From validated idea to a launched product in weeks.
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Software Product Consulting
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Client reviews
What clients say about working with us
Verified reviews from founders and CTOs on Clutch.
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Custom Software Development
Web-Based Coupon App Development
The work produced by the team was of exceptional quality.
Verified review on Clutch (Jon Thies, opens in a new tab)
Jon Thies
CTO, Model Rocket Feb 2022 – Mar 2023
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Custom Software Development
Mobile & Web Platform Development & Design
Silver Scintilla was responsive, respectful, and enjoyable to work with, quickly addressing any questions or requests.
Verified review on Clutch (DeShawn Brown, opens in a new tab)
DeShawn Brown
CEO & Founder, Lithios Jun 2021 – Nov 2022
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Custom Software Development
Web-Based HRM System Development
Silver Scintilla provided the best solution with scalable functionality, personalized features, and robust security.
Verified review on Clutch (Suheb Khan, opens in a new tab)
Suheb Khan
Director, Collaborative Insight Technologies Jul 2020 – Jun 2022
FAQ
Legacy App Modernization: frequently asked questions
Straight answers to what clients ask us most.
Need advice for your project?
Every product is different. Talk to a senior engineer about your tech stack, timeline and team, and get honest advice on your next step.
Talk to an ExpertWhat is legacy application modernization?
It is updating old software to modern technology, architecture and hosting so it is safer, faster and cheaper to maintain, while keeping the business logic that works.
Do we have to rewrite everything?
Rarely. We usually modernise in stages, replacing the riskiest or most valuable parts first while the rest keeps running.
Will there be downtime?
We plan migrations to avoid disruption, with parallel running and rollback plans for each step.
Can you work with old technologies?
Yes. We regularly modernise .NET Framework, classic ASP, VB6, older PHP and Java applications, and Dynamics NAV and AX.
Free discovery call
Have an idea? Let's turn it into AI-powered software.
Book a free discovery call with our experts. Share your idea and we will help you shape the scope, timeline and budget, under NDA.
- Free consultation
- NDA before we talk
- Transparent estimate




