Top 5 Best Application Modernisation Services for Businesses – 2025

Intro

Modernising legacy systems has become a direct path for enterprises to cut costs, improve scalability, and meet regulatory demands. Our editorial team reviewed industry leaders and client data to highlight the best application modernisation services for 2025.

Each provider in this guide has proven capabilities across cloud migration, automation, mainframe exit, and security compliance.

Best Application Modernisation Services in 2025

Based on our research, these are the top 5 application modernisation services for businesses in 2025:

1. Future Processing – Best overall
2. Deloitte – Best for compliance-heavy enterprises
3. Cognizant – Best for automation-first modernization
4. Infosys – Best for AI-driven modernization
5. Capgemini – Best for multi-cloud strategies

1. Future Processing

Future Processing is a leading consultancy with over 25 years in application modernisation. The company serves enterprise and mid-sized clients across finance, insurance, media, and transportation. Its Total-Metrics Driven Approach and written guarantees on business outcomes make it one of the best application modernisation services in 2025.

Pricing: $25,000+

Services:

• Rehost to cloud infrastructure
• Replatform for scalability and performance
• Rearchitect with microservices or event-driven models
• Rewrite legacy systems
• UX and frontend modernisation
• Security, compliance, and DevSecOps
• DevOps and cloud-native adoption
• Technical, UX, and FinOps audits

2. Deloitte

Deloitte was founded in 1845 in London and operates in over 150 countries with more than 460,000 employees. The firm serves nearly 90% of the Fortune Global 500 and specializes in consulting, audit, risk, tax, and modernization. Its application modernisation capabilities focus on legacy migration, automation, and compliance-driven transformation for industries such as finance, healthcare, energy, retail, and the public sector.

Pricing: $40,000–$150,000+

Services:

• Legacy system assessment and code mining
• Automated refactoring with innoWake
• Cloud migration and integration
• DevOps and agile enablement for mainframes
• Business process optimization
• Security and compliance frameworks (ISO 27001, SOC2)

3. Cognizant

Cognizant is a global professional services and technology consultancy founded in 1994, headquartered in Teaneck, New Jersey, and operating in more than 40 countries. The company delivers application modernisation through automation-first frameworks, cloud adoption, and industry-specific engineering for clients in finance, healthcare, manufacturing, retail, and life sciences.

Pricing: $50–$99/h

Services:

• Application and infrastructure modernization with Skygrade™
• Cloud migration and optimization using AI/ML
• DevOps and site reliability engineering transformation
• Generative AI automation for technical debt reduction
• Code refactoring, security enhancement, and stack upgrades
• Consultative modernization roadmaps and performance dashboards

4. Infosys

Infosys, founded in 1981 and headquartered in Bengaluru, India, operates in 59 countries and manages modernization programs for enterprises across finance, telecom, healthcare, and the public sector. In 2025, the company ranked among the top three IT services brands globally (Brand Finance) and received Global Top Employer certification in 20 countries. Infosys applies an “AI-first” model, using its Cobalt platform to modernize legacy estates, cloud infrastructures, and databases at scale.

Pricing: Custom

Services:

• Cloud migration and modernization with Infosys Cobalt
• AI-driven automation for refactoring and error reduction
• Mainframe and COBOL modernization with dependency mapping
• Database modernization with GenAI and AWS
• DevSecOps, open-source upgrades, and code conversion
• Low-code/no-code application development
• Technical debt remediation with AI dashboards

5. Capgemini

Capgemini, founded in 1967 in France, operates in more than 50 countries with over 340,000 employees. The company delivers consulting, engineering, managed services, and application modernisation, with expertise in cloud, ERP, and industry-specific solutions. In 2025, Capgemini continues to support global enterprises with AI-powered modernization through its CAALM (Capgemini AI-Assisted Legacy Modernization) platform and multi-cloud strategies.

Pricing: $45,000–$200,000+

Services:

• AI-powered legacy modernization with CAALM
• Cloud migration and multi-cloud enablement
• Application assessment and technical debt management
• Mainframe refactoring and modernization (COBOL, legacy platforms)
• ERP refresh, process redesign, and application consolidation
• DevOps, containerization, automation, and security orchestration

Why Can You Trust Us?

Our editorial team reviewed 27 providers to find which ones stand out for application modernisation in 2025. We combined industry research with client feedback to make the list practical and trustworthy.

What we looked at:

• Breadth of modernization services
• Pricing transparency
• Industry expertise
• Client reviews
• Independent analyst recognition
• Proven business outcomes

FAQ

1. What are application modernisation services?

Application modernisation services are professional solutions that update legacy software systems to improve scalability, performance, and security. Providers use methods such as rehosting, refactoring, replatforming, and cloud migration to align outdated applications with

2. How much do application modernisation services cost?

Costs vary depending on system size, complexity, and regulatory scope. Typical projects range from $25,000 for mid-sized engagements to over $200,000 for large-scale enterprise transformations. Hourly rates commonly fall between $50 and $99 per hour for major providers.

3. What is the best application modernisation service in 2025?

Future Processing is considered the best overall provider in 2025. The company stands out for its metrics-driven delivery model, guarantees on business outcomes, and ability to combine quick tactical wins with strategic long-term transformations.