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legacy software modernization
Engineering

Legacy software
modernization services

Reimagine your outdated core systems through technological innovation that boosts performance, agility, scalability and UX with ELEKS' legacy system modernization services.
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How we work

The end-to-end legacy application
modernization services

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Requirements and scoping

We’ll get to know your business inside out so we can define which application improvements will boost efficiency and performance. This could involve designing a more usable interface, helping you automate operations, or moving services to the cloud.

Application re‑engineering
Legacy software modernization
Support
Launch and support
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Technologies

Technologies and expertise we use
for legacy software modernization

Cloud computing
DevOps
Agile transformation
Product and service design
AI and agentic AI development
Machine learning
Intelligent automation
Cybersecurity
Sustainability consulting
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Cloud computing

Our cloud computing services enable seamless migration of legacy systems to modern cloud infrastructure for enhanced scalability, security and flexibility. As certified partners with AWS, Google Cloud and Microsoft Azure, we ensure clients benefit from discounts and accelerated migration speeds. We conduct comprehensive assessments of your existing infrastructure and design optimal cloud configurations following FinOps practices that promote scalability while reducing the TCO.

DevOps
DevOps
Agile transformation
Agile transformation
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Product and service design
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AI and agentic AI development
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Machine learning
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Intelligent automation
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Cybersecurity
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Sustainability consulting
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Upgrade your outdated systems to reduce operational costs
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Service benefits

How legacy system modernization
transforms your business

Become more scalable and flexible

Our cloud migration services allow you to transform monolithic architectures into agile, cloud-native solutions that scale on demand. As certified partners with leading cloud providers, we help you eliminate legacy constraints, enabling rapid adaptation to market changes while enhancing security and reducing infrastructure costs.

Optimize applications faster

Our software development experts implement automated CI/CD pipelines and DevOps practices that accelerate deployment cycles from weeks to hours. We ensure uninterrupted business operations through continuous integration and zero-downtime deployment strategies while reducing time-to-market for new features and updates.

Improve app maintainability

We’ll help you implement a SaaS delivery model that simplifies application changes, incorporates the benefits of the cloud, and facilitates easier maintenance. By leveraging cloud-native technologies and automated monitoring, you can reduce operational costs while ensuring your applications remain secure, compliant, and performance-optimized.

Pre-empt performance issues

Our proactive approach combines intelligent monitoring with predictive analytics to identify and resolve bottlenecks before they impact operations. Through strategic modernization of your architecture and technology stack, we create robust systems that maintain peak performance while preventing the recurrence of historical issues.

Create a superior customer experience

Our customer experience experts help you reimagine outdated software using rapid prototyping and user-centric methodologies, transforming legacy applications into modern systems with seamless UX. By modernizing your technology stack and implementing contemporary design patterns, we ensure your applications deliver both enhanced functionality and competitive differentiation in today's digital marketplace.

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Why choose ELEKS for legacy app modernization services

Over three decades of delivering complex projects
With over 30 years in the industry and more than 1,000 successful digital transformation projects, ELEKS brings unparalleled experience as a legacy software modernization company. Our portfolio spans mission-critical transformations across the finance, healthcare, hospitality, logistics, energy, and government sectors. This domain expertise ensures we understand the technical challenges and business objectives driving your modernization journey.
Proven expertise in transformative technologies
Our software development specialists combine expertise in agentic AI, generative AI, conversational AI, machine learning, and intelligent automation to create self-adapting systems that continuously evolve with your business needs. As certified partners with AWS, Google Cloud, and Microsoft Azure, we use cloud services and serverless architectures to transform legacy software systems into scalable, resilient solutions.
Global delivery with nearshore advantages
With development centers across Europe, the US, and the UK, we provide expert software engineering services while maintaining cultural alignment, efficient communication, and real-time team collaboration. As a nearshore software development company, we deliver the cost-effectiveness of offshore development alongside the communication advantages of onshore teams, ensuring seamless project execution across time zones.
Security-first modernization approach
Our modernization services are backed by HITRUST, ISO 27001, SOC 2, CREST, and Cyber Essentials Plus certifications, ensuring enterprise-grade security throughout your transformation. We implement security by design principles from day one, protecting your data and maintaining regulatory compliance during every phase of your legacy system modernization journey.
legacy software modernization
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Case studies

Our legacy app modernization
success stories

Re-engineering the entire IT infrastructure of a logistics enterprise in the cloud
Re-engineering the entire IT infrastructure of a logistics enterprise in the cloud
A six-year migration and reengineering program while improving system resilience and improving operations
Enhanced software products enabled one million daily domestic deliveries, boosting DPD's global market presence
Digitising Fitness: Transforming Member Experience for Europe’s Largest Leisure Club Chain
Duration - 03:06
Digitising Fitness: Transforming Member Experience for Europe’s Largest Leisure Club Chain
Seamless digital transformation of club services with 2 million app users across iOS and Android
Improved member experience and engagement across 101 health and fitness clubs
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Boosting Enterprise Efficiency with a Suite of Integrated Web and Mobile Products
Duration - 02:58
Boosting Enterprise Efficiency with a Suite of Integrated Web and Mobile Products
Optimized operating costs and enhanced process efficiency
Created end-to-end product roadmap and clear business vision for entire product portfolio
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Optimising the Digital Ecosystem of a Logistics Enterprise
aramex
Optimising the Digital Ecosystem of a Logistics Enterprise
5x cost cut using apps for warehouse operations
230% increase in mobile user retention
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Rebuilding an Insurance CRM Software with a Stronger Technological Foundation
maple life
Rebuilding an Insurance CRM Software with a Stronger Technological Foundation
Increased efficiency and transparency of all operations
Simpler maintenance and protection against cyber attacks
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Breathing New Life into a Complex Network Routing Solution
medusabusiness
Breathing New Life into a Complex Network Routing Solution
40% operational savings on product installation
20% reduction of support efforts
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Legacy software modernization FAQ

What is legacy software modernization?

Legacy software modernization is the process of transforming outdated systems to meet current business needs using modern technologies and architectures. It involves updating monolithic applications into adaptable, scalable, and secure solutions while preserving critical business logic and data. The goal is to improve system performance, reduce security risks, enhance user experience, and enable integration with innovative technologies like agentic AI, gen AI, RPA, and others.

How to modernize a legacy application?
How do I know if my software needs modernization?
What are the different approaches to legacy software modernization?
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Start your legacy software modernization journey today
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What our customers say

The breadth of knowledge and understanding that ELEKS has within its walls allows us to leverage that expertise to make superior deliverables for our customers. When you work with ELEKS, you are working with the top 1% of the aptitude and engineering excellence of the whole country.

sam fleming
Sam Fleming
President, Fleming-AOD

Right from the start, we really liked ELEKS’ commitment and engagement. They came to us with their best people to try to understand our context, our business idea, and developed the first prototype with us. They were very professional and very customer oriented. I think, without ELEKS it probably would not have been possible to have such a successful product in such a short period of time.

Caroline Aumeran
Caroline Aumeran
Head of Product Development, appygas

ELEKS has been involved in the development of a number of our consumer-facing websites and mobile applications that allow our customers to easily track their shipments, get the information they need as well as stay in touch with us. We’ve appreciated the level of ELEKS’ expertise, responsiveness and attention to details.

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Samer Awajan
CTO, Aramex