Modernising legacy systems has become a top priority for enterprises that need scalability, security, and faster delivery cycles.
For this ranking, I’ve reviewed leading global providers that specialise in this area and identified the top 7 companies offering the best application modernization services in 2025. Each vendor profiled here has proven expertise in replatforming, cloud migration, automation, and AI-driven transformation, giving businesses clear options for risk-mitigated and future-ready technology upgrades.
What Are the Best Application Modernization Services in 2025?
Based on our research, these are the best 7 application modernisation services for businesses in 2025:
- Future Processing – Best for guaranteed, metric-driven outcomes
- TECHVIFY – Best for AI-powered modernization
- Infosys – Best for enterprise-scale transformation
- Cognizant – Best for industry-specialized solutions
- Radixweb – Best for flexible mid-market projects
- TCS – Best for compliance-focused enterprises
- IBM Consulting – Best for hybrid cloud modernization
1. Future Processing
Price: $25,000+
Future Processing is a leading Poland-based technology consulting and software development company founded over 25 years ago, known for its expertise in legacy system transformation for regulated sectors such as insurance, finance, media, and transportation. The firm distinguishes itself through a metric-driven model, embedding business outcomes and written guarantees on delivery benchmarks into each engagement. Recognized for its quick-win deliverables within four weeks, Future Processing is considered one of the best application modernisation services in 2025.
Services offered:
- Cloud migration with minimal code changes for cost efficiency
- Cloud-native upgrades for performance and scalability
- Legacy rearchitecture into microservices and event-driven systems
- Incremental rebuild of outdated apps with updated UX and logic
- Modern UX design to improve usability and productivity
- DevSecOps integration and GDPR compliance
- Cloud-native scalability with autoscaling and multi-region deployment
2. TECHVIFY
Price: $10,000–$25,000+
TECHVIFY is an AI-first digital transformation and software development company founded in 2018 and headquartered in Hanoi, Vietnam. With over 300 specialists, it delivers end-to-end modernization for enterprises and startups across finance, e-commerce, manufacturing, and other industries. The firm focuses on AI-powered modernization, scalable cloud solutions, and agile delivery cycles.
Services offered:
- Application modernisation services (cloud, microservices, APIs, AI integration)
- Custom software development (web, mobile, enterprise)
- AI & data engineering (machine learning, analytics, automation)
- Cloud migration and DevOps optimisation
- Managed services and application maintenance
- IoT solutions for connected systems
3. Infosys
Price: $50,000+
Infosys, founded in 1981 in Bangalore, India, is a global IT consulting and digital transformation company listed on the NYSE. It modernises legacy systems through AI, automation, and cloud, supported by proprietary platforms such as NIA, Finacle, and EdgeVerve. The company works with enterprises worldwide, particularly in regulated industries like finance, healthcare, and government.
Services offered:
- Application modernisation (cloud migration, rearchitecting)
- Cloud and multicloud services (AWS, Azure, Google Cloud)
- AI and automation (GenAI, ML, code refactoring)
- Data engineering and analytics
- Consulting and continuous system upgrades
4. Cognizant
Price: $100,000+
Cognizant is a NASDAQ-100 technology company founded in 1994 and headquartered in New Jersey, USA, employing over 300,000 people globally. It delivers enterprise-scale application modernisation and digital transformation for industries such as healthcare, finance, manufacturing, and retail. The company integrates AI, cloud, and automation to replatform legacy systems and optimise operations.
Services offered:
- Application modernisation (migration, replatforming, rearchitecting)
- Cloud services and platform management
- Automation and DevOps (SRE, pipelines)
- AI and data modernisation
- Security, compliance, and privacy solutions
5. Radixweb
Price: $20,000–$50,000+
Radixweb is a global IT consulting and software engineering firm founded in 2000 in Ahmedabad, India, with additional offices in Texas, USA. The company employs over 650 experts and has delivered more than 4,200 projects for 3,000+ clients worldwide, including enterprises in healthcare, finance, and manufacturing. Certified with ISO 27001 and ISO 9001:2015, Radixweb provides secure, scalable application modernisation and digital transformation solutions.
Services offered:
- Application modernisation (cloud migration, rearchitecting, debt reduction)
- Custom software development (web, mobile, UI/UX)
- AI/ML-enabled automation and analytics
- Cloud consulting and DevOps
- IoT and embedded systems integration
- Managed services and ongoing support
6. TCS (Tata Consultancy Services)
Price: $100,000+
TCS is a global IT services and consulting company founded in 1968 in Mumbai, India, and part of the Tata Group. Operating in 46 countries with over 600,000 employees, it provides large-scale application modernisation services for enterprises across banking, insurance, healthcare, and manufacturing. TCS uses proprietary platforms such as MasterCraft to automate replatforming, rearchitecting, and technical debt management.
Services offered:
- Application modernisation (migration, replatforming, reengineering)
- Cloud and hybrid-cloud transformation
- Data and analytics solutions
- Automation, DevOps, and AI integration
- Industry-specific modernisation programs
- Security and compliance frameworks
7. IBM Consulting
Price: $100,000+
IBM Consulting, formerly IBM Global Business Services, is the consulting arm of IBM with around 160,000 professionals worldwide. It delivers application modernisation, AI integration, and cloud migration for Fortune 500 companies and governments, leveraging platforms such as Red Hat OpenShift, Watson, and watsonx.
Services offered:
- Application modernisation (refactoring, phased migration, code remediation)
- Hybrid cloud migration (AWS, Azure, IBM Cloud, GCP)
- AI and analytics deployment
- DevOps, automation, and SRE practices
- Industry and strategy consulting
Conclusion
Application modernisation services in 2025 are defined by specialized services that blend cloud, AI, and automation to deliver measurable business value. Each provider in this list offers distinct modern technologies, from transformation models to large-scale enterprise projects.
Choosing the right partner ensures not only streamlined operations today but also long-term adaptability and future growth!
