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Legacy Application
Modernization

We deliver application modernization services for enterprises running mission-critical legacy systems. With 10+
years of delivery experience, our teams modernize production applications while preserving controls, audit
evidence, and business continuity across regulated US and global environments.

TRUSTED BY CONGLOMERATES, ENTERPRISES AND STARTUPS ALIKE

With a 1,600+ specialist team and 500+ legacy processes transformed, we deliver app modernization services for enterprises modernizing live systems while preserving audit evidence, control integrity, and operational continuity across US and global environments.

Our Core Capabilities for App Modernization Services

  • Modernizing legacy applications through phased refactoring while maintaining uptime, data flows, and control evidence
  • Designing and developing API -first layers over legacy cores to enable integration without destabilizing proven business logic
  • Delivering cloud application modernization services using hybrid migration models with preserved logs and monitoring
  • Retrofitting identity, access control, logging, and monitoring through secure application modernization services
  • Modernizing data layers and reporting pipelines while preserving historical records needed for audits and finance
  • Supporting legacy system modernization services through observability, tuning, and controlled change in production
IN THE NEWS
Engadget
Financial Express
Fast Company
Oracle
Financial Times
Financial Times
Engadget
Financial Express
Fast Company
Oracle
Financial Times
Financial Times
Deloitte Technology Fast 50 India Winner 2023 & 2024
Clutch Top 100 Fastest-Growing Companies 2025
Statista High Growth Companies APAC 2025 & 2024
Statista India's Growth Champions 2023
Times Group Tech Company of the Year 2023
App Development Company of the Year 2020 by The Entrepreneur

Our Delivery Track Record, Measured
in Real Outcomes

10+

Years of Enterprise Delivery

1,600+

Technology Specialists

3,000+

Solutions Designed and Delivered

500+

Legacy Processes Transformed

74+

Countries Powered by Tech Innovation

35+

Industries Supported Across
Regulated Environments

End-to-End Legacy Application Modernization We Offer

We deliver legacy app modernization services for enterprises running critical systems at scale. Our teams modernize applications in production, reduce technical risk, and strengthen control maturity while supporting security, audit, and long-term operational stability.

Our Services

[1] Application Modernization Consulting and Roadmap
[2] Application Reengineering
[3] Application Containerization
[4] Mainframe Modernization
[5] Infrastructure Modernization and Migration
[6] Cloud Migration and Cloud-Native Application Development
[7] DevOps
01
Application Modernization Consulting and Roadmap

Application Modernization Consulting and Roadmap

We assess legacy application portfolios to define modernization paths, including custom application modernization services, that balance risk, cost, and control while aligning with audit, security, and operational constraints.

• Legacy portfolio assessment covering dependencies, risks, data flows, and control gaps

• Phased modernization roadmap aligned to audit cycles, release controls, and business priorities

02
Application Reengineering

Application Reengineering

As part of our app modernization services, we reengineer legacy applications at the code and architecture level to improve performance and maintainability without breaking production behavior.

• Code refactoring to improve maintainability while preserving functional parity and production behavior

• Architecture updates that reduce coupling and technical debt without introducing downtime risk

03
Application Containerization

Application Containerization

We containerize legacy applications to standardize deployment, improve isolation, and enable controlled scaling across cloud and on-prem environments.

• Safe containerization of legacy runtimes with consistent configuration and environment isolation

• Kubernetes-ready deployment models supporting controlled scaling and release governance

04
Mainframe Modernization

Mainframe Modernization

We modernize mainframe-based applications through controlled decomposition, integration layers, or workload offloading while preserving transactional integrity.

• Mainframe workload analysis to identify offload, refactor, or integration opportunities

• Incremental modernization preserving transactional integrity, batch processing, and reporting accuracy

05
Infrastructure Modernization and Migration

Infrastructure Modernization and Migration

We deliver legacy system modernization services by modernizing underlying infrastructure to remove bottlenecks and improve resilience without destabilizing live systems.

• Infrastructure dependency mapping across compute, storage, network, and legacy hosting layers

• Migration strategies with rollback readiness, monitoring continuity, and change approval controls

06
Cloud Migration and Cloud-Native Application Development

Cloud Migration and Cloud-Native Application Development

We migrate and develop cloud applications using staged approaches that preserve observability, security controls, and compliance traceability.

• Cloud-native architecture design aligned with security baselines and operational monitoring needs

• Hybrid and multi-cloud deployments supporting regulated workloads and data residency requirements

07
DevOps

DevOps

Our app modernization services combined with DevOps services help improve release control and system stability of legacy environments without bypassing governance.

• CI/CD pipelines aligned with change management, segregation of duties, and audit evidence needs

• Release automation with traceable approvals, rollback mechanisms, and environment-level controls

Talk Through Your
Modernization Risks

Discuss your legacy environment, technical debt, and audit exposure
with specialists who modernize live systems in regulated settings.

Enterprise Applications We Modernized at Scale

Our app modernization services show how large, transaction-heavy platforms can be modernized without disrupting live operations. Each case reflects controlled system evolution, integration stability, and performance improvements at production scale.
Arijit Bhattacharyya
Arijit Bhattacharyya
Domino’s Product Head, Digital
Neeraj Tiwari
Neeraj Tiwari
Director - Digital Engineering Americana Group
Bat-Erdene A.

Manager, IT Division, TokiApp

Industries We Modernize

Through legacy app modernization services, we modernize complex, industry-specific systems that support revenue, operations, and compliance. Our work spans regulated and high-scale sectors where legacy platforms must evolve without disrupting production, data integrity, or control environments.
[ 1 ]

FinTech

Core banking and payment processing platforms
FinTech ERP systems
[ 2 ]

Banking

Financial management systems
Advanced analytics and risk assessment systems
Cybersecurity software
[ 3 ]

Insurance

Policy lifecycle management systems
IoT-enabled risk assessment tools
[ 4 ]

Lending

Automated loan origination systems
Document management platforms
[ 6 ]

Healthcare

Medical imaging and diagnostic platforms
Inventory management software
[ 8 ]

eCommerce

Intelligent product discovery systems
Conversion optimization and analytics
[ 9 ]

Manufacturing

Industrial IoT and smart factory platforms
Manufacturing execution systems
Supply chain management systems
[ 10 ]

Construction

BIM integration and collaboration platforms
Field operations and workforce management
[ 11 ]

Automotive

[ 12 ]

Logistics and Transportation

Transportation management systems
Last-mile delivery optimization
Fleet management systems
[ 13 ]

Travel

Online travel agency platforms
Customer experience and loyalty platforms
[ 14 ]

Aviation

Flight operations management systems
Aircraft health monitoring systems
Aircraft maintenance and MRO solutions
[ 15 ]

Restaurant

Online ordering and delivery management
Customer relationship management platforms
[ 16 ]

Energy

Renewable energy integration systems
Asset performance management platforms
[ 17 ]

Oil and Gas

Exploration and production management systems
Pipeline monitoring and SCADA systems
Supply chain and trading platforms
Field operations management systems
[ 18 ]

Electric Vehicles

Battery optimization and management systems
Remote vehicle diagnostics platforms
[ 19 ]

Telecommunications

Network management and orchestration systems
5G network optimization platforms
Custom B2B and B2C portals
[ 20 ]

OTT

Audience analytics and personalization engines
Content management systems
[ 21 ]

Real Estate

Customer relationship management platforms
Market analytics and valuation platforms

Discuss Modernization
for Your Industry

Review how your industry-specific platforms can be modernized without
disrupting operations, data integrity, or regulatory controls.

Compliance and Control Frameworks We Work Within

Our legacy application modernization services are delivered inside active compliance environments. Controls, evidence, and audit expectations are maintained as systems evolve across legacy and modern stacks.
sox itgc

SOX ITGCs

soc 2 type ii

SOC 2 Type II

soc 1 type ii

SOC 1 Type II

nist

NIST

fedramp

FedRAMP

iso 27001

ISO 27001

iso 22301

ISO 22301

hipaa

HIPAA

hitech

HITECH

ccpa

CCPA

lgpd

LGPD

wcag

WCAG

ada

ADA

Why Enterprises Choose Appinventiv for Legacy
Modernization

Modernizing legacy applications is a long-term operational decision, not a one-time rebuild. Enterprises work with Appinventiv as an application modernization company because our legacy application modernization services are designed to preserve controls, withstand audits, and remain stable as systems evolve in production.
01

Built for Audit and Control Continuity

We modernize applications inside active control environments, aligning changes to SOX ITGCs, access governance, and change management so audit evidence remains intact throughout transition.

02

Proven Delivery on Business-Critical Systems

Our teams modernize systems tied to revenue, reporting, payments, and operations where downtime, data loss, or broken integrations are not acceptable outcomes.

03

Modernization Without Big-Bang Risk

We apply phased refactoring, replatforming, and hybrid approaches that allow legacy and modern systems to coexist while risk is reduced incrementally.

04

Engineering Discipline That Survives Audits

Documentation, logs, approvals, and traceability are treated as system requirements, not afterthoughts. This reduces remediation effort during internal and external audits.

05

Multi-Entity and Cross-Region Execution

We support enterprises operating across subsidiaries, regions, and shared services, accounting for cross-border data flows and layered access models.

06

Modern Capabilities Without Governance Exposure

We introduce cloud, automation, and AI where they add operational value, without creating black-box dependencies that are difficult to explain or control.

Modernize Without Disruption

Achieve 40% higher productivity and 30% lower operational spend
through controlled legacy application modernization.

Industry Recognition and Delivery Credentials

Our work is recognized by global industry bodies for consistent delivery, engineering discipline, and enterprise-scale execution across complex modernization programs.

Technology Platforms and Ecosystems We Work With

aws
Amazon Web Services
Ingram Micro
Ingram Micro
Accenture
Accenture
Google Cloud Platform
Google Cloud Platform
Azure
Azure
ServiceNow
ServiceNow
Adobe
Adobe
Magento
Magento
Databricks
Databricks
Snowflake
Snowflake
HubSpot
HubSpot
Moengage
Moengage
Boomi
Boomi
Docker
Docker
aws
Amazon Web Services
Ingram Micro
Ingram Micro
Accenture
Accenture
Google Cloud Platform
Google Cloud Platform
Azure
Azure
ServiceNow
ServiceNow
Adobe
Adobe
Magento
Magento
Databricks
Databricks
Snowflake
Snowflake
HubSpot
HubSpot
Moengage
Moengage
Boomi
Boomi
Docker
Docker
aws
Amazon Web Services
Ingram Micro
Ingram Micro
Accenture
Accenture
Google Cloud Platform
Google Cloud Platform
Azure
Azure
ServiceNow
ServiceNow
Adobe
Adobe
Magento
Magento
Databricks
Databricks
Snowflake
Snowflake
HubSpot
HubSpot
Moengage
Moengage
Boomi
Boomi
Docker
Docker
aws
Amazon Web Services
Ingram Micro
Ingram Micro
Accenture
Accenture
Google Cloud Platform
Google Cloud Platform
Azure
Azure
ServiceNow
ServiceNow
Adobe
Adobe
Magento
Magento
Databricks
Databricks
Snowflake
Snowflake
HubSpot
HubSpot
Moengage
Moengage
Boomi
Boomi
Docker
Docker
AWS Sagemaker
AWS Sagemaker
AWS Bedrock
AWS Bedrock
MuleSoft
MuleSoft
OneStream
OneStream
Oracle
Oracle
Salesforce
Salesforce
Red Hat
Red Hat
Sabre
Sabre
Stripe
Stripe
Cloudinary
Cloudinary
AWS Sagemaker
AWS Sagemaker
AWS Bedrock
AWS Bedrock
MuleSoft
MuleSoft
OneStream
OneStream
Oracle
Oracle
Salesforce
Salesforce
Red Hat
Red Hat
Sabre
Sabre
Stripe
Stripe
Cloudinary
Cloudinary
AWS Sagemaker
AWS Sagemaker
AWS Bedrock
AWS Bedrock
MuleSoft
MuleSoft
OneStream
OneStream
Oracle
Oracle
Salesforce
Salesforce
Red Hat
Red Hat
Sabre
Sabre
Stripe
Stripe
Cloudinary
Cloudinary
AWS Sagemaker
AWS Sagemaker
AWS Bedrock
AWS Bedrock
MuleSoft
MuleSoft
OneStream
OneStream
Oracle
Oracle
Salesforce
Salesforce
Red Hat
Red Hat
Sabre
Sabre
Stripe
Stripe
Cloudinary
Cloudinary

Future-Ready Technologies Applied to Enterprise Systems

We apply modern technologies where they strengthen control, resilience, and decision quality in existing enterprise environments. Each capability is introduced in a way that integrates cleanly with legacy systems, data models, and governance already in place.
[ 1 ]

Artificial Intelligence

We integrate AI where it delivers measurable value such as decision support, automation, and early risk detection. Models are built with ownership, traceability, and explainability to meet enterprise and regulatory expectations.

[ 2 ]

Cloud Services

Cloud adoption is designed around uptime, data residency, and operational control. We implement hybrid and multi- cloud services that modernize infrastructure without disrupting live systems.

[ 3 ]

Data Science and Analytics

We build data analytics platforms that turn operational and historical data into actionable insight for leadership, compliance reporting, and performance monitoring.

[ 4 ]

Machine Learning

We apply machine learning for forecasting, risk scoring, and adaptive workflows. Models are versioned, monitored, and governed to evolve safely in regulated environments.

[ 5 ]

Internet of Things (IoT)

Custom IoT is applied where asset visibility, monitoring, and automation are critical. We design secure ingestion pipelines and device management suitable for large-scale deployments.

[ 6 ]

Blockchain

Blockchain is used selectively for auditability, traceability, and tamper-resistant records, integrated where verification and controlled transparency are required.

[ 7 ]

AR, VR, and MR

Immersive AR/VR technologies are applied for training, simulation, and guided operations, designed to be measurable and manageable in enterprise settings.

Technologies We Use to Modernize Legacy Systems

As an application modernization company, our technology stack supports modernization inside live enterprise environments. Tools and platforms are selected based on integration complexity, security posture, audit impact, and the ability to coexist with legacy systems during phased transitions.
Advanced Technologies
AI/ML
AI/ML
Azure Blockchain
Azure Blockchain
Big Data
Big Data
Metaverse
Metaverse
IOT
IOT
Cloud Computing Platforms
Microsoft Azure
Microsoft Azure
Google Cloud Platform
Google Cloud Platform
AWS
AWS
Containerization Platforms
Docker
Docker
Kubernetes
Kubernetes
DevOps Tools
Jenkins
Jenkins
GitLab
GitLab
Ansible
Ansible
Programming Languages
Java
Java
Python
Python
Javascript
Javascript
Databases
PostgreSQL
PostgreSQL
MySQL
MySQL
MongoDB
MongoDB
Specialized Tools
CAST Highlight
CAST Highlight
CAST AIP
CAST AIP
Security and Identity
OAuth 2.0
OAuth 2.0
OpenID Connect
OpenID Connect
Okta
Okta
Auth0
Auth0
AWS WAF
AWS WAF

Review Your Legacy Technology Stack

Get a clear view of how your current stack can support modernization
without disrupting integrations, security controls, or live operations.

Our Approach to Legacy
Application Modernization

Legacy modernization usually breaks down when teams treat it like a fresh build. As an application modernization company, we work inside live enterprise systems where dependencies are real, audits are active, and downtime affects revenue, reporting, and trust.

Scoping Based on How Systems
Really Run

We begin by looking at how systems behave in production, not how they look on diagrams. This means tracing dependencies across applications, batch processes, interfaces, and reporting flows that are often undocumented but business critical.

Context Mapping With Operational
Context

Every modernization step is tied back to access models, change approvals, data handling rules, and ownership. This prevents gaps in SOX, SOC, and internal audit controls once changes start moving through environments.

Incremental Changes in Live
Environments

Work is done in phases, not cutovers. Legacy and modern components often operate side by side so teams can observe behavior, validate data consistency, and reduce risk before anything is retired.

Testing Beyond Feature Parity

Testing goes past screens and workflows. We look at integrations, downstream reports, security logs, failover behavior, and performance under real load because that is where issues surface later.

Findings Reviewed With the
Right Teams

Issues are discussed with engineering, security, operations, and audit stakeholders early. This avoids late rework and keeps remediation aligned with business priorities, not just technical fixes.

Stabilisation and
Remediation Support

After release, the focus stays on stability. Monitoring, control checks, and evidence validation continue until teams are confident the system is operating as expected.

Frequently Asked Questions

[ 1 ]

What does legacy application modernization actually mean in a live enterprise environment?

In real environments, modernization means working inside systems that cannot stop. Data feeds reporting. Jobs run overnight. Interfaces break silently. The work focuses on refactoring, integration hardening, and infrastructure upgrades without destabilizing what already works.

[ 2 ]

How do enterprises modernize systems without breaking audits or financial reporting?

Most failures happen when teams try to modernize applications services too quickly. We see reporting jobs fail, access trails disappear, or approvals bypassed. Safe modernization keeps controls active while legacy and modern components run side by side.

[ 3 ]

When is the right time to modernize legacy applications?

If releases take months, incidents keep repeating, or audits surface the same control gaps year after year, the system is already holding the business back. A legacy modernization company usually starts with these signals before touching architecture.

[ 4 ]

How is modernization different from replacing legacy systems entirely?

Replacement assumes you can discard years of logic, data flows, and operational knowledge. Modernization keeps what still works and fixes what does not. Enterprises choose legacy modernisation services when stability and continuity matter more than cosmetic change.

[ 5 ]

What should enterprises look for in a modernization partner?

Look for teams who have worked inside production systems under audit pressure. A legacy application modernization company should understand batch failures, interface dependencies, access drift, and why documentation gaps become audit findings.

[ 6 ]

Can modernization programs scale across regions and multiple business units?

Yes, but it is rarely simple. Identity models differ. Data crosses borders. Shared services create hidden dependencies. A legacy modernization company plans for these realities instead of discovering them mid-project.

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