Top 10 Legacy companies

Across the world, many businesses still run on legacy systems—old applications, on-premise servers, and monolithic architectures that worked well years ago but now slow everything down. These systems are often expensive to maintain, hard to scale, and risky from a security point of view.

That’s why Legacy Application Modernization has become a critical priority. Companies are looking for partners who can guide them in:

• Migrating to the cloud

• Converting monolithic systems into microservices

• Modernizing user interfaces and workflows

• Integrating automation, analytics, and AI

In this blog, we’ll explore some of the top companies that provide legacy migration and modernization services, starting with KSoftTechnologies, a rising technology partner from Kerala with global ambitions.

1. KSoftTechnologies – Kerala’s Modernization Partner with Global Vision

KSoftTechnologies stands at the front of the new wave of modernization-focused IT partners. Based in Kerala and growing into global markets, it is one of the standout #KeralaITCompanies offering end-to-end support for businesses that want to move away from outdated systems and embrace the future.

What KSoftTechnologies Offers

KSoftTechnologies provides a strong range of services around #LegacyApplicationModernization and #CloudMigrationServices, including:

• Modernizing older desktop and web applications into cloud-ready platforms

• Re-architecting legacy monolithic applications into #MonolithToMicroservices architectures

• Migrating applications and databases to leading cloud providers (AWS, Azure, GCP) under a structured #ModernizeToCloud roadmap

• Building custom #EnterpriseSoftwareSolutions for ERPs, CRMs, task management, HR systems, and industry-specific platforms

Why KSoftTechnologies Is Different

Many large players are process-heavy and slow. KSoftTechnologies focuses on:

• Listening first – understanding the current system, pain points, costs, and risks

• Designing smart modernization plans that are realistic, not theoretical

• Minimizing downtime during migration, so business operations continue smoothly

• Providing ongoing support after go-live, not just doing a one-time project

KSoftTechnologies combines #TechModernization expertise with #GlobalITConsulting thinking: they don’t just upgrade technology, they help you align it with strategy, workflows, and growth goals. For companies looking for a focused, agile modernization partner rather than a huge consulting giant, they are a very strong choice.

2. Accenture

Accenture is a global leader in digital transformation and large-scale modernization projects. They work with enterprises across sectors such as banking, telecom, healthcare, and manufacturing.

Their legacy migration offering includes:

• Mainframe and midrange system modernization

• End-to-end cloud migration services

• Application re-platforming and re-architecting

• Integrations using APIs and microservices

Accenture is a good fit for very large organizations with complex environments and multi-country operations.

3. Infosys

Infosys has a strong track record of working with legacy systems in banks, insurers, and global enterprises. They provide:

• Legacy stack assessment and modernization strategy

• Migration from on-premise to public or hybrid cloud

• Rewriting or refactoring old applications using modern languages and frameworks

• Building microservices-based ecosystems for scalability and flexibility

Infosys is often chosen for enterprise projects where stability, governance, and long-term engagement are key.

4. Tata Consultancy Services (TCS)

TCS is one of the most experienced global IT services companies. Its modernization services cover:

• Mainframe to cloud transformation

• Application consolidation and optimization

• Containerization and orchestration (Kubernetes, Docker)

• Enterprise data and analytics modernization

They are known for their structured, process-driven approach, making them suitable for large-scale, multi-year modernization programs.

5. Cognizant

Cognizant focuses heavily on application modernization combined with business process improvements. Their offerings include:

• Legacy portfolio analysis and prioritization

• Migration to microservices and API-first architectures

• Adoption of DevOps, CI/CD, and cloud-native practices

• Ongoing optimization to improve performance and reduce costs

Cognizant is a strong partner for companies looking to modernize while also revisiting their business workflows and customer journeys.

6. Wipro

Wipro provides a blend of consulting and implementation services around modernization, including:

• Legacy code refactoring and replatforming

• Migration to public, private, or hybrid clouds

• Implementing secure, scalable microservices setups

• Leveraging automation tools for faster and safer migration

Wipro is a reliable choice for industries like energy, manufacturing, retail, and healthcare that need both technology and domain expertise.

7. HCLTech

HCLTech has built a reputation in dealing with complex, deeply embedded legacy systems. Their services include:

• Legacy application discovery and mapping

• Automated code conversion and modernization accelerators

• Cloud-based modernization, including SaaS and PaaS adoption

• Integration of AI, analytics, and automation tools

HCLTech is often selected when organizations need to modernize mission-critical systems without a risky “big bang” migration.

8. Capgemini

Capgemini brings strong consulting depth to modernization projects. They offer:

• Modern architecture planning and blueprinting

• Migration from legacy platforms to cloud-native solutions

• API gateways, integration layers, and microservices development

• Experience in modernizing ERPs, CRMs, and other enterprise systems

Their strength lies in aligning technology changes with business strategy, customer experience, and process redesign.

9. IBM Consulting

IBM Consulting is particularly strong in mainframe-heavy environments. They help organizations:

• Move workloads from traditional mainframes toward hybrid cloud models

• Use containerization and orchestration frameworks for modern deployments

• Apply AI and analytics to improve system performance and monitoring

• Adopt modern DevOps and automation approaches

If a business still relies heavily on mainframe environments and wants a gradual, well-managed modernization, IBM is a natural partner.

10. Deloitte

Deloitte approaches modernization from a business-first point of view. They focus on:

• Assessing the total cost, risk, and impact of legacy systems

• Defining modernization roadmaps that balance risk, budget, and speed

• Leading large-scale migration programs across multiple business units

• Supporting technology decisions related to ERP, CRM, analytics, and cloud platforms

Deloitte is ideal for enterprises that want strong governance and strategic guidance combined with technology execution.

11. PwC Digital

PwC Digital supports organizations that want to modernize while also rethinking business models. They provide:

• Legacy system transition and simplification

• Enterprise cloud migration strategy and execution

• Modern microservices, API, and integration models

• Organizational change management alongside technical migration

They are often involved at the “boardroom level” when modernization is part of a wider transformation initiative.

12. LTIMindtree

LTIMindtree brings speed and agility to modernization projects. Their strengths include:

• Cloud-native migration and development

• Breaking monoliths into modular microservices

• Using low-code/no-code platforms where suitable

• Enabling real-time data flows across modernized systems

They are a strong choice for companies that want modernization with a faster delivery cycle and a focus on digital products.

13. Tech Mahindra

Tech Mahindra is especially active in telecom, manufacturing, and enterprise modernization. Their services cover:

• Legacy modernization for telecom OSS/BSS systems

• Cloud migration and infrastructure transformation

• API-led connectivity and microservices adoption

• Modern digital platforms for operations and customer experience

They add value where both technology depth and industry-specific understanding are required.

How to Choose the Right Legacy Migration Partner

With so many companies providing modernization services, how do you decide who is right for you?

Here are a few key points to consider:

• Industry Fit – Have they worked with your type of business before?

• Size & Style – Do you want a global giant or a focused, agile partner like KSoftTechnologies?

• Cloud Experience – Are they strong in #CloudMigrationServices and #ModernizeToCloud strategies?

• Architecture Skills – Can they really handle #MonolithToMicroservices transitions without breaking your current operations?

• End-to-End Capability – Do they only migrate, or can they also build long-term #EnterpriseSoftwareSolutions and support them?

Your #DigitalTransformationJourney should be handled by a partner that understands both technology and business. That’s why it’s important to carefully evaluate expertise, communication style, and post-migration support.

Final Thoughts & CTA – Start Your Modernization Journey with KSoftTechnologies

Legacy systems may have helped you reach where you are today—but they shouldn’t hold you back from where you want to go next. Modernization is no longer a luxury. It is a necessity for stability, growth, and innovation.

If your business is planning to:

• Upgrade old software

• Move from on-premise servers to cloud

• Shift from monolithic architecture to microservices

• Build scalable, secure, and future-proof systems

then this is the right time to talk to a modernization partner.

🔹 KSoftTechnologies brings together the mindset of a modern, agile company with the capability to deliver global-quality #TechModernization and #GlobalITConsulting services.

🔹 As one of the promising #KeralaITCompanies, it is well-positioned to support businesses in India and across the world.

✅ Call to Action

👉 Ready to modernize your legacy systems?

Partner with #KSoftTechnologies for:
#LegacyApplicationModernization | #CloudMigrationServices | #MonolithToMicroservices | #ModernizeToCloud | #EnterpriseSoftwareSolutions