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Legacy Application Modernization Company

Legacy Application Modernization Company

Modernize Your Legacy Systems with iFour

Rebuild your software architecture for improved functionality and long-term resilience.

At iFour, we support companies with application reengineering services, and upgrade their old applications into fast, secure, and scalable solutions without interrupting their daily operations.

Whether it is software modernization, cloud-native implementation, or on-premise to Azure migration; we make sure it all works perfectly for you.

Get a Free Modernization Assessment
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Leverage cloud-native architecture with our Azure App Modernization services.

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Why Legacy Application Modernization

Why Legacy Systems Hold You Back

The reason is simple. Legacy systems were built using traditional technologies and lack today’s fast-paced demands.

As your company grows, these outdated platforms struggle to keep up.

At iFour, we’ve seen how legacy systems can limit innovation and drain resources. That’s why we help businesses move forward with modern, cloud-ready solutions using application modernization best practices.

Key benefits of Legacy App Modernization with iFour:

  • Modernized apps with SOA (Service Oriented Architecture)
  • Stronger security and compliance
  • Seamless data access with API integration
  • Faster and better user experience
  • Future-ready technology
  • Maximized ROI from app modernization
  • Lower maintenance costs
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Future-Proof your business with Cloud App Modernization Services

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Expected Outcomes of our Legacy App Modernization Services

Here’s what you can expect from our Legacy app Modernization expertise:

  • For CTOs & IT Leaders

    We help you clean up old tech problems and make your systems ready for the future.

    You get apps that are fast, safe, and easy to grow.

    While you focus on new ideas, we take care of the upgrade.

  • For Startups

    You get cloud apps that grow with your business. They’re quick, flexible, and don’t cost too much. We help you build strong tech so you can launch fast and change direction when needed.

  • For Enterprise Clients

    We turn old, complex systems into modern, high-performing cloud apps. You save money, work faster, and follow all the important rules. The change is smooth, smart, and built to last.

Our highlights include:

  • Microsoft-Certified Azure Experts

  • 12+ Years of Cloud Consulting Experience

  • Security Built from Day One

  • Proven Modernization Framework

  • Flexible Engagement Models

  • Fully Executed NDA for Every Project

 

Our Legacy App Modernization Services

Given below are our legacy app modernization services that help your old software work like new. We fix what’s slow, update what’s outdated, and make sure everything runs smoothly.

Each service is designed to help your business grow, save time, and stay secure.

Legacy System Assessment & Audit

You get a full check-up of your old software. We look at what’s working, what’s not, and how to make it better.

Rehosting (Lift-and-Shift to Azure)

We move your app to the cloud (Azure) without changing much. It’s like giving your system a new home that’s faster and safer.

Refactoring & Reengineering

Our app modernization experts clean up your code and rebuild parts of it so it runs smoother and works better with new tech.

Rearchitecting for Cloud-Native Architecture

We redesign your app to fit perfectly in the cloud. That means it’s easier to scale, update, and manage.

UI/UX Modernization

We give your app a fresh look and make it easier to use. So you and your users enjoy a better experience.

API Enablement & Integration

We help your app talk to other apps. You get more features and better connections with modern tools.

Database Modernization

We upgrade your data system so it’s faster, more secure, and easier to manage.

Security & Compliance Modernization

We make sure your app follows the latest safety rules and keeps your data protected from threats.

DevOps & CI/CD Automation

We set up smart tools that help you build, test, and launch updates faster—with fewer mistakes.

Performance Optimization & Monitoring

We tune your app to run at top speed and keep an eye on it so problems get fixed quickly.

Our Portfolio

Take a look at our latest projects, where digital transformation comes to life.

Building Management System

Building Management System

The system offers a dynamic 3D view to manage building components and elements, allowing you to take measurements and gather statistics online without visiting the site in person. Component or element can be anything ranging from window to glass door.

 

Technology We Used

Node.js for REST APIs | Angular 6 | Azure

 
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HIPAA Compliant Healthcare System

HIPAA Compliant Healthcare System

We built this sustainable solution for a leading healthcare consultant based in the USA. Our HIPAA-compliant, centralized, real-time, and robust ERP system is designed to streamline essential operations, ensuring efficiency and compliance in the healthcare sector.

 

Technology We Used

ASP.NET (C#) 4.5 | JQuery | MS SQL Server | Azure

 
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Municipality Healthcare System

Municipality Healthcare System

We built a Municipality Insurance Management System that uses XML for healthcare solutions. Actions generate XML stored on Blockchain, which can be retrieved on request. Invoices are automatically generated by date, and approved requests add funds as tokens to patients' wallets.

 

Technology We Used

Node.js | C# MVC | Solidity | MongoDB, Azure B2C | Azure

 
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Customer Relationship Management System

Customer Relationship Management System

We built a CRM system and a web-based SaaS solution for our Singapore-based client. This system assists them in managing their entire sales life cycle, which helps them become more competitive and enhances their business returns.

 

Technology We Used

PHP 5.x | JavaScript, Jquery, AJAX | MYSQL | Azure

 
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Life Cycle Assessment software

Life Cycle Assessment software

We built this software for our Aus-based construction client which helps to calculate sustainability index of buildings. LCA is about finding the solutions for sustainable future and is impactful in optimizing sustainable design of the built environment.

 

Technology We Used

Microsoft .NET 4.5 MVC | MS SQL Server | Azure

 
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AI healthcare tracking system

AI healthcare tracking system

This AI-based project is a smart tracking device for health monitoring. It uses sensors, IoT, Informedica, ChatGPT, and AI to quickly and securely transfer and interpret data. This helps healthcare staff respond quickly to incidents detected by the system.

 

Technology We Used

Angular 14 | .NET Core 6.0 Web API | Azure

 
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Say goodbye to tech bottlenecks! Choose iFour as your Legacy Software Modernization company.

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FAQs on Legacy App Modernization:

We start with a detailed audit to understand your current setup. We identify performance issues, security gaps, and areas for improvement — so you get a clear roadmap for modernization.

Lift-and-shift means moving your existing app to Microsoft Azure without changing its core. It’s a fast, cost-effective way to improve performance, security, and scalability—ideal if you want quick cloud benefits with minimal disruption.

Refactoring improves your app’s code without changing its functionality. Reengineering goes deeper — rebuilding parts to make it more efficient and future-ready. Both help reduce technical debt and improve long-term performance.

Cloud-native architecture lets your app fully leverage the cloud—making it easier to scale, update, and integrate with other services. It’s perfect for businesses looking to grow and innovate faster.

We redesign your app’s interface to be clean, intuitive, and user-friendly. A better experience means happier users, fewer errors, and improved productivity.

APIs allow your app to connect with other platforms and services. This opens up new features, automates workflows, and improves data sharing across your business.

We upgrade your database to be faster, more secure, and easier to manage. This improves app performance and ensures your data is safe and accessible.

We build with security in mind from day one. Our team ensures your app meets industry standards and compliance requirements—protecting your data and your reputation.

DevOps and CI/CD help you release updates faster and with fewer bugs. We automate your development pipeline so your team can focus on innovation, not manual tasks.

We fine-tune your app for speed and reliability, then set up monitoring tools to track performance in real time. You’ll know exactly how your app is doing—and catch issues before they become problems.

The problem with Legacy Systems includes:

  • Security vulnerabilities
  • High maintenance costs
  • Poor user experience
  • Performance bottlenecks
  • Lack of scalability and integration
 
Blog Our insights
Top Shift Left security Best Practices CTOs should consider

10 October 2025

Lochan Paliwal

Top Shift Left security Best Practices CTOs should consider

According to HackerOne, fixing a security issue after software is released can cost 30 times more than fixing it during development. Today, CTOs take a different approach. Shift...

Real-world Consequences of Ignoring DevSecOps In Your Strategy

29 September 2025

Lochan Paliwal

Real-world Consequences of Ignoring DevSecOps In Your Strategy

A few years ago, companies built software first and thought about security later. Developers and security teams did not cooperate, and problems were fixed only after release. This activated DevSecOps vulnerabilities and many DevSecOps failures.

Why CTOs Should Care About Shift Left Security in DevOps

19 September 2025

Kapil Panchal

Why CTOs Should Care About Shift Left Security in DevOps

Security has always been a major concern. Your company spends millions on cybersecurity tools, and guess what? You’re still vulnerable. When you're working in the cloud, especially...