Legacy Software Modernization Services

We spur on businesses to give new strength to existing software by wrapping their legacy systems in the latest technology. Beat the curve by replacing outdated legacy systems with innovative software solutions.

Don’t fall under the burden of legacy software

Software modernization is the key to business resilience, growth, and leading positions in the market. By modernizing your legacy digital estate, you usher in better user experience, unlock new business value, and ignite digital transformation to keep your ecosystem future-proof.

Break free from obsolete software

Our software modernization strategy will tackle most problems that haunt your business productivity.

Why *instinctools

Increase speed to market


Reduce development cost


Assure information security


Get high-quality software


Scale team up and down


Legacy application modernization services we provide

Let our modernization experts transform your legacy software into cutting-edge assets with new features anchored in business strategy and the latest industry trends.

Platform migration

Our experts enable your software applications to run on newer platforms with a lower cost of maintenance and higher throughput. We transfer your outdated software while preserving the whole functionality and code structure.

Code refactoring

Leverage our legacy modernization services to improve the maintainability of your aging and mutating spaghetti code. Enjoy increased security, optimized code architecture, and a bug-free environment while maintaining the system’s functionality.

Complete re-engineering

We reframe your legacy system using modern technologies and platforms while maintaining the original functions. This legacy modernization approach is the right fit for a full reset of your outdated systems.

Cloud migration

Step it up by moving your current system to an innovation-ready, cloud-based environment. Our cloud migration services accelerate the long-run growth of your business applications and add more agility to your operations.


Our developers break down legacy software monoliths into microservices to help you innovate faster and easier. Containerization also helps you change isolated pieces of the application with minimal disruption.

Application customization

Whether it’s mobile development or web-based systems, we help maximize your technology investment by tailoring the software to your unique business needs. We deliver all types of customization — from minor design alterations to long-term innovation projects.

Remediation services

Enhance your data security posture and eliminate vulnerabilities in your legacy application. Our developers perform thorough scans of your network to iron out the kinks in your data landscape and make it immune to security threats.

Application consulting

Planning a modernization project? Leverage our legacy software modernization services to handle the entire legacy application modernization cycle, from defining your business case to choosing the right renovation approach.

Tap into all-round modernization service.

Chad West
Authored by Chad West,

*instinctools USA
Managing Director,
15+ years in IT consulting

How to choose a software
development partner in 2024?

Comprehensive guide
and checklist included.

Choose your new ecosystem

Following your unique requirements, we match your modernization needs with the right architecture based on cutting-edge environments.

From monolithic to microservices

Our developers replace rigid and heavy monolithic systems with distributed microservices that allow you to stay in sync with ever-evolving customer needs. Scalability, speed-to-market, and improved stability are the hallmarks of this approach.

From on-prem to the cloud

Our cloud engineers transition your data-intensive applications to well-balanced cloud environments that bring down your IT infrastructure costs, manage compliance imperatives, and enable 24/7 service accessibility.

From servers to serverless

Build and run applications, databases, and storage systems with no bulky servers and associated costs. Go serverless to reduce infrastructure and operational costs, eliminate idle resources, and release on demand.

Components we modernize

Our software modernization company breathes life into all aspects of your legacy software to help you create a future-ready business culture.

Application infrastructure

Replacing aging solutions, building in automation, and migrating to improved cloud systems.

Application architecture and tech stack

Re-architecturing legacy software with new technologies at the core.


Streamlining your business processes via custom API development and integration.


Creating dynamic interfaces and making your customer experience more impactful.

Featured success stories


Products we modernize for you

The business IT landscape is a puzzle chopped up into hundreds of pieces. We can add a new coat of paint to each component regardless of its scale and technological makeup.

Web applications and eсommerce solutions

Mobile applications based on a variety of platforms

Enterprise products: custom or platform-based

IoT solutions in manufacturing, logistics, healthcare and other industries

Big Data and Business Intelligence solutions, including data migration and optimization

Machine Learning to strengthen your application’s functionality

Augmented or Extended reality solutions to enrich your customers’ experience

Plotting a course to innovation with 5 steps

Building on a solid strategy and your business agenda, we map out your application modernization project and break it into five phases.

Application modernization pre-discovery

  • Reviewing your current software assets and ecosystem
  • Identifying the gaps and steps needed to reach the desired outcomes
  • Estimating ROI and TCO for your legacy software modernization project
  • Providing a new vision of the process according to the analysis of the company’s current state
  • Reviewing integration and compliance requirements

Product design and architecture

  • Assessing the scope of changes to be implemented
  • Comparing and selecting the technologies
  • Calculating the impact and value of each approach in question
  • Presenting the thoroughly structured plan of software modernization actions
  • Estimating the risks of migration and creating backup plans

Implementing modernization

  • Writing detailed documentation
  • Refactoring and re-engineering complex monolithic systems
  • Migrating applications to the physical, virtual, or cloud infrastructure
  • Setting up change management processes
  • Testing renovated environments

Post-modernization support

  • Providing training for end users
  • Maintaining and right-sizing the new environment
  • Supporting further application enhancements
  • Software health monitoring

Embark on a modernization journey with our expert help.

What our clients say

Patrick Reich
Co-Founder & CEO

The expectations for the quality of the initial product were very high. I think *instinctools did a great job ensuring those expectations are met. We met the developers we were going to be working with and it quickly became apparent that they are very qualified and were able to deliver the vision that we had from our side for the product. They clearly told us what they were going to do, and if there were questions or problems along the way, they clarified them really quickly thanks to transparent communication.

Dimitri Popolov
Research Data and Systems Manager

We had a tight delivery deadline and *instinctools has been able to find another developer and assign him to our project from one day to another. And we’ve been able to successfully deliver this project. When the partner is good, things are just getting done. And that was the case with *instinctools.

Matti Vesterinen
Solution Development Manager

The quality has been good. It’s been on the expected level: things come on time, we have a good visibility on the things that *instinctools developers are doing and performing for us, communication is good. Wherever we see that we need some more exra resources, we have found *instinctools to be a good partner in helping us out on those areas.

Tim Rosenberger
Director, Global R&D

I’ve been impressed by the available skillset, tthe flexibility to ramp up resources quickly, and the scalability to extend development teams on short notice. I look forward to continue collaboration with *instinctools and their contribution to our projects.

Richard Lohwasser
Co-Founder & CEO

People at *instinctools are quite tech heads, which I like. They have used very advanced libraries, advanced techniques, advanced coding paradigms. So the advantage is that we get reusable code, that we get well-testable code, we get well-maintained code.

Dr. Jonas Block
Product Owner

The *instinctools team exhibits the flexibility and professionality required for young companies. You can rely on their tested structures and processes that integrate nicely with your internal workflows. Being able to grow your team quickly with experienced professionals that start delivering value immediately and without a long interview process is a huge help. And personally, you will be working with a team of kind and interesting people.

Nadine Walther
Co-Founder & CEO

The team is dependable when it comes to managing time and finances, consistently staying within the designated budget. We’re pleased with *instinctools. Their business analysts are exceptional. They serve as the spokespeople between technology and business, representing both sides effectively.

Jeanine Shepstone
Senior Technical Writer

Instinctools is good at understanding the technical issues – once an issue is outlined, they do not need repeated explanation. They also do not simply accept a proposed solution, but they think about it and propose a better solution. I was really impressed by the custom interface they built for us – we outlined the requirements, and they implemented them in a user-friendly way that makes the interface a pleasure to use.

How can you gain from our legacy modernization company?

Having old software supporting business operations exposes your organization to additional risks, hampers your innovation potential, and increases your costs. We spend time understanding your business to help you reach your goals by providing you with a new system.


Completely transparent and interconnected architecture, easy to modify in the future and maintain at present.


Easily transferable software that can be used in different environments and for several computing platforms.


Robust system compatible with modern standards where the data is automatically backed up and recovered.


Compatible, lag-free applications with operational simplicity, rock-solid architecture, and disruption-resistant technologies.


The fast and efficient solution that provides a seamless user experience and gives your brand the exterior it deserves.


Cloud-native components and an industry-best technological stack make it easy to stay competitive in volatile markets.

According to Unisys Corporation study, the contrast between the features of old-school and updated companies in numbers looks like:





of employees are frustrated withold system usability





of users become less productive working with outdated apps





of workers want to quit their job because of attrition

Are you ready to take it to the next level?

Tech stack and ample experience

Programming languages and frameworks
Reporting and visualization
On-premise solutions based on open source stack
Software products
Cloud platforms
Alex Lukavenkau
Alex Lukavenkau Head of Sales

Get in touch

Drop us a line about your project at contact@instinctools.com or via the contact form below, and we will contact you soon.