Digital Engineering · Application Modernization

Legacy Systems
Reborn as
Cloud-Native

We transform monolithic, outdated applications into agile, cloud-native systems through microservices decomposition, containerization, API first re-architecture, and platform re-engineering. Your old system's business logic, rebuilt for the next decade.

Architecture Transformation · Live View
⚠ Legacy Architecture
🏚️Monolithic App (VB.NET)
🗄️Single SQL Server DB
📁On-Prem File Server
🔒Tightly Coupled Services
🐌Manual Deployments
✓ Modern Architecture
Microservices (Node.js)
☁️Azure SQL + Cosmos DB
📦Azure Blob Storage
🔗Event-Driven APIs
🚀CI/CD Pipelines
65%
Cost Down
Deploy Speed
99.9%
Uptime SLA
Faster Releases
Microservices Architecture Containerization & Docker Kubernetes Orchestration API-First Re-architecture Legacy to Cloud-Native Monolith Decomposition Strangler Fig Pattern Serverless Migration DevOps Transformation Microservices Architecture Containerization & Docker Kubernetes Orchestration API-First Re-architecture Legacy to Cloud-Native Monolith Decomposition Strangler Fig Pattern Serverless Migration DevOps Transformation

Real Problems We
Solve Every Day

Every modernization engagement starts from a real pain point. Here's what our clients come to us with and what they look like after.

Get In Touch →

Monolithic VB6 / ASP System

Decades-old codebase, no documentation, only one engineer who understands it. Releases take weeks and break everything.

⚠ Before: 6-week release cycles, 40% downtime risk per deploy
✓ After: Weekly releases, independent services, zero-downtime CI/CD

On-Premise Oracle / SQL Server

Expensive licensing, hardware refresh cycles, no scalability, and DR strategy that requires days to recover.

⚠ Before: $180K/year Oracle license, 8hr RTO, 3 DBA headcount
✓ After: Azure SQL Managed Instance, 15-min RTO, 65% cost reduction

No APIs — Silo'd Desktop App

Core business logic locked inside a fat-client Windows app. No mobile access, no partner integrations, no future.

⚠ Before: Desktop-only access, zero third-party integrations possible
✓ After: REST + GraphQL APIs, mobile app, partner ecosystem live

Scaling Failures Under Load

System works fine at 100 users. At 5,000 concurrent users during peak, everything collapses. Business lost every season.

⚠ Before: System outage on peak days, lost ₹40L revenue per event
✓ After: Auto-scaling AKS cluster, handles 50K concurrent users

Compliance & Security Gaps

System was built before GDPR, RBI guidelines, ISO 27001 — now a liability. Auditors flagging critical vulnerabilities every quarter.

⚠ Before: 23 critical CVEs, failed RBI audit, no secrets management
✓ After: OWASP Top 10 clean, Key Vault secrets, ISO 27001 certified

Manual Operations & No DevOps

Deployments via FTP, no automated tests, staging environment is someone's laptop. Every release is a company-wide prayer.

⚠ Before: Manual FTP deploys, 4hr maintenance windows, zero tests
✓ After: GitOps CI/CD, automated test gates, 12 deploys per day

Modernization Strategies
We Deliver

Each strategy has a distinct architecture pattern, toolchain, and delivery timeline.

Microservices Decomposition

Break your monolith into independently deployable, loosely coupled services. The Strangler Fig pattern lets us do this incrementally without a big-bang rewrite.

  • Domain-driven design to identify service boundaries
  • Strangler Fig pattern for zero-downtime incremental decomposition
  • Event-driven communication with Azure Service Bus or Kafka
  • Independent CI/CD pipelines per service for rapid release
  • Service mesh (Istio) for observability, security, and traffic
  • API gateway providing a unified entry point for consumers
Domain-Driven DesignStrangler FigEvent-DrivenService Mesh
Microservices Architecture
📱
Client Apps
🌐
Web Portal
🔀
API Gateway / Load Balancer
👤
Auth Svc
📦
Order Svc
💰
Payment Svc
📧
Notify Svc
🗄️
Auth DB
🗄️
Order DB
🗄️
Payment DB
📨
Event Bus
Faster deployment cycles
Each service deploys independently

Containerization & Kubernetes

Package your application into Docker containers, then orchestrate at scale with Kubernetes (AKS/EKS). Consistent environments from development to production with auto-scaling built in.

  • Docker containerization of all application components
  • Kubernetes (AKS/EKS/GKE) for orchestration and auto-scaling
  • Helm charts for repeatable, version-controlled deployments
  • Container Registry (Azure ACR / AWS ECR) for image management
  • Resource limits, health probes, and rolling update strategies
  • GitOps deployment with ArgoCD for declarative config management
DockerKubernetesHelmGitOpsAKS
Kubernetes Cluster Architecture
🔀
Ingress Controller
📦
Pod: API v1
📦
Pod: API v2
📦
Pod: Worker
🔄
HPA Auto-Scale
⚙️
ConfigMaps
🔑
Secrets
🗄️
Persistent Volumes
📊
Prometheus
Resource efficiency vs VMs
Bin packing & auto-scaling saves cloud spend

Serverless & Event-Driven

Migrate suitable workloads to Azure Functions or AWS Lambda. Pay only for execution time, scale automatically from zero to millions, and eliminate server management entirely.

  • Function identification — extract event-driven workloads from monolith
  • Azure Functions / AWS Lambda for compute-on-demand
  • Azure Event Grid / SNS for pub-sub event routing
  • Azure Durable Functions for stateful long-running workflows
  • Cold-start optimisation and performance tuning strategies
  • Cost modelling — serverless vs container per workload
Azure FunctionsLambdaEvent GridLogic Apps
Serverless Event Architecture
📱
HTTP Trigger
Timer Trigger
📨
Queue Trigger
Function A
Function B
Function C
📡
Event Grid
🔄
Service Bus
🌌
Cosmos DB
📦
Blob Storage
$0
Idle server cost
Pay only when code actually runs

API-First Re-Architecture

Expose your legacy system's business logic through versioned REST or GraphQL APIs — enabling mobile apps, third-party integrations, and clean frontend-backend separation.

  • API strategy and design — RESTful or GraphQL based on consumer needs
  • OpenAPI / Swagger specification-first development
  • Azure API Management or AWS API Gateway for policies
  • Legacy wrapping — thin API layer over existing business logic
  • API versioning strategy for backward compatibility
  • Developer portal, documentation, and SDK generation
REST APIsGraphQLOpenAPIAPI Gateway
API-First Architecture
📱
Mobile App
🌐
Web SPA
🤝
Partners
🔀
API Gateway (APIM)
🔗
REST v1 API
GraphQL API
🔔
Webhooks
🏚️
Legacy Core
🗄️
New Services
Faster third-party integrations
Standard APIs vs bespoke connectors

What We Modernize
and How We Do It

Every engagement combines deep technical expertise with pragmatic delivery — phased, de-risked, and aligned to your business continuity.

Monolith to Microservices

Domain-driven decomposition of monolithic applications into independently deployable microservices using the Strangler Fig pattern minimal-downtime and full business continuity throughout.

150+
Legacy systems modernized since 2004

Legacy UI Modernization

Replace aging ASP.NET WebForms, VB6, PowerBuilder, or Delphi UIs with modern React, Next.js, or Angular frontends backed by clean REST APIs.

Database Modernization

Migrate from on-prem SQL Server, Oracle, or DB2 to Azure SQL, PostgreSQL, or Cosmos DB schema refactoring, data migration, zero data-loss cutover.

DevOps Transformation

Establish CI/CD pipelines, infrastructure-as-code, automated testing gates, and GitOps workflows that turn manual deploys into reliable automation.

Containerization & AKS

Dockerize applications and orchestrate on Azure Kubernetes Service auto-scaling, health probes, and Helm-based deployment management.

Security & Compliance Retrofit

Embed OWASP Top 10 controls, secrets management, RBAC, and compliance postures (GDPR, ISO 27001, RBI) from architecture phase onward.

API Strategy & Gateway

Design and implement RESTful and GraphQL API layers with Azure API Management versioning, throttling, developer portals, and monetisation-ready gateways.

Modernization Across
Every Sector We Serve

We bring domain knowledge to every engagement — understanding the regulatory constraints, data sensitivities, and operational demands specific to your industry.

🏦

Banking & Finance

Core banking systems, loan origination platforms, and trading applications migrated to cloud-native architecture while meeting RBI, SEBI, and ISO 27001 mandates.

Core banking API modernization (COBOL → microservices)
RBI-compliant data residency on Azure India regions
Real-time fraud detection pipelines via event streaming
72%
Infra cost reduction
99.99%
Uptime achieved
0
Data loss incidents
🏥

Healthcare & Life Sciences

Hospital information systems, EMR platforms, and clinical workflow tools modernized with HIPAA-aligned architecture and HL7/FHIR interoperability standards.

EMR system migration from on-prem to Azure Health Data
FHIR API layer over legacy HL7 v2 systems
Patient data encryption and audit trail compliance
Faster query response
100%
HIPAA compliant
60%
Support cost drop
🏭

Manufacturing & Industry 4.0

ERP and MES systems modernized into cloud-native platforms with IoT sensor integration, real-time production monitoring, and predictive maintenance pipelines.

Legacy SAP integration via API abstraction layer
IoT data ingestion pipeline to Azure IoT Hub
Real-time OEE dashboards replacing spreadsheet reports
28%
OEE improvement
Data freshness
45%
Downtime reduction
🎓

Academic & EdTech

Campus ERP systems, LMS platforms, and student information systems modernized to handle peak enrollment loads and enable mobile-first learning experiences.

Monolithic campus ERP to microservices (10K+ students)
LMS API integration with Azure AD for SSO
Auto-scaling infrastructure for exam-day traffic spikes
50K
Concurrent users
Zero
Exam-day outages
40%
License savings
0+
Applications modernized
across 20+ years
0%
Average infrastructure
cost reduction
0×
Faster deployment
frequency post-modernization
0
Production outages during
migration (our record)

Why 5000+ Enterprises
Trust Us to Modernize

Modernization is high-stakes. Here's what makes our approach distinctly different.

01

Incremental, Not Big-Bang

We modernize in waves using the Strangler Fig pattern your legacy system stays live throughout. No "shut everything down and rebuild" risk. Each wave delivers value before the next begins.

Migration Wave Progress
Auth
100%
Orders
100%
Payments
78%
Reports
35%
Legacy UI
Upcoming
02

Zero Data Loss, Zero Downtime

Our migration methodology has a perfect record no production outages and zero data loss incidents across 150+ modernization engagements. Blue green deployments and robust rollback are built in from day one.

# Blue-Green Deployment Config
strategy: blue-green
rollback_window: 15m
health_check:
  path: /health
  interval: 10s
  threshold: 3
traffic_shift:
  blue: 100% → 0%
  green: 0% → 100%
# ✓ Zero downtime guaranteed
03

20+ Years of Legacy System DNA

We have worked inside VB6, COBOL adjacent systems, ASP Classic, PowerBuilder, and early .NET applications. That institutional knowledge understanding how legacy systems actually behave is what prevents surprises mid migration.

Legacy Tech We've Modernized
VB6 / VBA ASP Classic ColdFusion PowerBuilder WebForms Oracle Forms Delphi .NET 2.0–3.5 FoxPro Clipper
→ All modernized to cloud-native architectures

Questions About
Application Modernization

How do we modernize without disrupting the live system?
We use the Strangler Fig pattern — new components are built alongside the legacy system and traffic is gradually shifted as each piece is validated. The old system continues to serve users throughout. Combined with blue-green deployments and automated rollback, we maintain a perfect zero-downtime record across all client migrations.
How long does application modernization take?
Timeline depends on portfolio size and strategy. A Rehost of a single application can complete in 4–8 weeks. A full Refactor (microservices decomposition) of a medium-complexity monolith typically takes 4–8 months. We always deliver the first wave — with working modernized components in production — within the first 8–10 weeks.
Do you modernize applications you didn't originally build?
Yes — the majority of our engagements involve systems built by other vendors or internal teams. Our discovery phase includes a comprehensive technical audit: codebase analysis, dependency mapping, database schema review, and documentation of all business logic. We have experience with VB6, ASP Classic, ColdFusion, PowerBuilder, Oracle Forms, Delphi, WebForms, and many other legacy platforms.
Will we lose data during the migration?
In 20+ years and 150+ modernization engagements, we have never lost a single record in production migration. Our data migration methodology includes: pre-migration data validation checksums, parallel-run verification, incremental migration with rollback points, and a post-migration reconciliation audit. We don't cut over until we have confirmed 100% data integrity.
What is the ROI of application modernization?
ROI comes from multiple directions: infrastructure cost reduction (average 65% lower), release velocity improvement (8× faster deployment frequency), reduced maintenance cost, improved reliability (99.9% uptime vs 95–98% for legacy), and risk reduction. Most clients see positive ROI within 12–18 months of their first modernization wave going live.
Should we Refactor or just Rehost?
Rehost gives the fastest cloud migration — typically 4–8 weeks — and immediate infrastructure cost savings. But it doesn't unlock agility or scalability benefits. Refactoring takes longer but delivers full cloud-native benefits: auto-scaling, independent service deployments, and the ability to evolve each service independently. Our honest recommendation after assessment: most enterprises benefit from a hybrid approach — Rehost quick-win systems, Refactor strategic ones, Retire others.

Talk to a Modernization Architect

Get an honest technical assessment of your legacy systems — no pitch, no commitment. We'll tell you what's worth modernizing and what isn't.

Talk With Us
Free 45-min architecture review · No commitment required