Legacy system modernization services

If your business still runs on outdated systems, you know the challenges: every update is slow, support is expensive, and downtime feels risky. Legacy platforms hold companies back. We provide legacy system modernization services that make your platforms stable, scalable, and ready for growth.

Our legacy modernization services

We deliver each legacy system modernization service with a clear business outcome in mind. Our goal is to improve reliability, speed up delivery, and cut IT costs while keeping your operations running smoothly.

Application re-engineering

Many old applications were built without today’s best practices. They often don’t have automated testing or deployment, no backups, no way to restore after a failure, and no clear release process. In one of our projects, a Java system running on on-premise servers had exactly these problems. We fixed it by adding automation and using an infrastructure-as-code approach.

Our approach includes:

building automation and CI/CD pipelines
setting up backup and restore systems
enabling release management with controlled cycles
refactoring code to use modern frameworks and build tools

Cloud migration and integration

Moving to the cloud improves performance, resilience, and cost efficiency. As a legacy enterprise system modernization firm, we help migrate platforms from on-premise to AWS, Azure, or VMWare with an infrastructure-as-code approach.

Key benefits include:

faster scaling with reduced costs
better disaster recovery options
integration with modern cloud services

Data migration

Data migrations require precision. We ensure business-critical data is transferred without disruption. Our role as a legacy system modernization company means keeping your data accurate, consistent, and secure during the process.

Legacy system support and maintenance

Some businesses are not ready for full re-engineering. We take over existing systems, fix bottlenecks, and gradually roll out improvements. This approach keeps the legacy system modernization process safe and cost-effective.

Steps of legacy system modernization

Modernization is not a single action but a structured process. With Deveit, legacy systems modernization follows clear steps to reduce risks and deliver lasting results

Initial system audit and assessment

We begin by analyzing code, infrastructure, and integrations to highlight risks and define priorities.

Defining business goals and requirements

Every modernization project should support business outcomes. Together with the client we clarify objectives such as cost reduction, scaling, or compliance.

Choosing the right modernization approach

Some systems need full re-engineering, others benefit from phased upgrades or cloud migration. We recommend legacy modernization solutions that best fit your needs

Migration and development process

Once the approach is defined, we implement automation, CI/CD, and staging environments to make development faster and safer.

Deployment and continuous support

We release changes into production with minimal downtime and continue supporting the system after launch.

Testing and quality assurance

We apply unit, integration, and load testing, followed by monitoring and alerting to ensure reliability.

Technologies we use

We combine proven tools with modern stacks to upgrade legacy systems. Our legacy modernization services are supported by cloud platforms, programming languages, DevOps tools, and analytics solutions.

Cloud platforms

We work with AWS, Azure, VMWare, and Digital Ocean, selecting the right platform for each client’s needs, industry, and compliance standards.

Modern programming languages and frameworks

Our team builds and modernizes systems using Java, PHP (Laravel, Symfony), React, Node.js, and Python. We also migrate applications from older stacks to these modern frameworks.

DevOps and automation tools

Automation is at the heart of modernization. We use Docker, Ansible, Jenkins, GitLab CI/CD, and GitHub Actions to accelerate delivery, reduce manual errors, and make deployments predictable and secure.

Businesses we work with

As a software development firm, we partner with clients from different industries and company sizes. Each has unique challenges, but all face the same problem: outdated platforms slowing them down.

Startups and small businesses

We help young companies avoid early technical debt and build platforms that can grow with them. Our modernization services give startups the flexibility to scale quickly without hitting technology roadblocks.

Marketing and creative agencies

Agencies often don’t have in-house technical teams. We take care of the complex technical work—maintenance, integrations, and automation—so agencies can stay focused on creative strategy and client results.

Medium-sized businesses and enterprises

For larger organizations, legacy systems mean higher IT costs and operational risks. We modernize complex infrastructures, streamline processes, and make sure enterprise platforms are ready for future growth.

Benefits of legacy system modernization

Modernizing outdated systems brings measurable business value. Companies gain stability, scalability, and efficiency while reducing risks and costs. Working with a trusted legacy modernization company ensures that the process is structured and aligned with your long-term goals.

The main benefits include:

reduced maintenance costs
improved security and compliance
faster release cycles with automation
systems that scale with business growth
better user and employee experience

Our successful projects in this niche

A German healthcare provider relied on a legacy Java system for CRM, accounting, and radiology workflows. It was critical for daily operations, but the risks were high: no automation, no backups, no release management, and no recovery plan in case of failure. Downtime of more than two hours was unacceptable.

We addressed these challenges by:

introducing Ansible and Jenkins pipelines for automation and restore
migrating builds from ANT to Maven and refactoring Java code
implementing GitLab CI/CD and Docker registry
setting up development and staging environments
configuring Graylog logging with alerts to Slack and Teams
migrating from on-premise to VMWare hosting
optimizing performance and adding automated recovery scripts

The outcome was a stable, secure platform with controlled releases, reliable backups, and monitoring that eliminated downtime risks.

Answers to frequently asked questions

What are the most common legacy system modernization approaches?

The most common paths are application re-engineering, re-platforming to the cloud, and phased upgrades. The right choice depends on your system’s size, risks, and business priorities. At Deveit, we help define which legacy modernization solutions fit best so you avoid unnecessary costs.

How long does a legacy system modernization project usually take?

Smaller sstems can be modernized in 3–4 months, while enterprise systems may take up to a year. We usually split projects into clear phases—audit, planning, migration, testing, and support—so you see results step by step.

How much does legacy system modernization cost?

Pricing depends on scope and complexity. A full legacy system modernization service for a large enterprise app will cost more than incremental updates for a small system. We start with an audit and then present tailored budget options.

Why should you choose Deveit for legacy system modernization?

As a legacy modernization company, we combine experience in healthcare, ecommerce, SaaS, and marketing with a strong DevOps culture.

I’m interested. How do I get started?

Book a free consultation with our technical project manager. We’ll review your system, outline a modernization roadmap, and explain whether you need full re-engineering, DevOps expertise to set up CI/CD, or AI integration to extend system capabilities.

Contacts

Modernization is always easier when you have a trusted partner. Deveit combines expertise as a legacy modernization company with a strong background in software engineering and DevOps practices. If your modernization project requires analytics, we also provide AI integration solutions to make your systems smarter and more data-driven.