Application Modernization & Cloud Transformation Services
Michigan-based modernization team — legacy transformation, cloud migration, and optimization

Legacy Application Modernization & Cloud Transformation

Upgrade legacy systems with secure, cost-effective, and cloud-native architectures for future-ready performance. We help enterprises modernize outdated software, transition to the cloud, and adopt scalable microservice architectures.

50+

Legacy systems modernized

15+

Years of cloud expertise

40%

Average cost reduction

24/7

Support coverage

WBENC Certified
MMSDC Certified
Oakland County Cornerstone Company
Michigan & Ohio teams

Why Choose One Team US for Modernization

Every modernization engagement pairs strategic assessment with dedicated engineering teams so you transition from legacy to cloud-native without sacrificing reliability, security, or performance.

Proven Legacy Modernization Expertise

Successfully modernized 50+ legacy systems including Java, .NET, and mainframe applications across industries.

Cloud-Native Architecture Specialists

Azure, AWS, and GCP certified engineers building scalable microservice architectures with containers and serverless.

Zero-Downtime Migration Strategy

Phased migration approach ensuring business continuity with zero data loss and minimal disruption to operations.

Full-Stack Modernization Team

In-house architects, developers, DevOps engineers, and QA specialists covering the entire modernization lifecycle.

Security & Compliance First

HIPAA, PCI-DSS, and SOC 2 compliant engineering with encryption, secure APIs, and audit-ready documentation.

Post-Migration Support & Optimization

Continuous monitoring, performance tuning, and feature enhancements to ensure long-term success.

Full-Cycle Modernization Capabilities

Build, migrate, and scale modern applications with a partner that owns assessment, architecture design, migration, and operations.

50+

Legacy systems modernized

15+

Years of cloud expertise

40%

Average cost reduction

Legacy Assessment & Strategy

  • Code analysis & technical debt assessment
  • Migration roadmap & cost estimation
  • Risk analysis & mitigation planning
  • Proof of concept development

Cloud Migration

  • Lift-and-shift migrations
  • Replatforming to cloud-native
  • Refactoring to microservices
  • Serverless architecture adoption

Modern Architecture

  • Microservices design & implementation
  • API-first development
  • Container orchestration (Kubernetes)
  • Event-driven architecture

Database Modernization

  • Schema optimization & refactoring
  • NoSQL migration strategies
  • Data migration & ETL pipelines
  • Performance tuning & indexing

DevOps & CI/CD

  • CI/CD pipeline setup
  • Infrastructure as Code (IaC)
  • Automated testing & deployment
  • Monitoring & observability

UI/UX Modernization

  • Legacy UI redesign
  • Responsive web design
  • Progressive Web Apps (PWA)
  • Design system implementation

Our Six-Step Modernization Framework

A proven lifecycle that keeps stakeholders aligned, migrations on schedule, and systems stable.

01

Assessment & Planning

Comprehensive analysis of legacy systems, technical debt, and migration strategy with cost estimation.

02

Architecture Design

Cloud-native architecture design, microservices planning, and technology stack selection.

03

Phased Migration

Incremental migration with parallel running systems, ensuring zero downtime and data integrity.

04

Modern Development

Agile development with CI/CD pipelines, automated testing, and continuous integration.

05

Deployment & Cutover

Production deployment, traffic migration, and legacy system decommissioning.

06

Optimization & Support

Performance tuning, monitoring, and continuous improvement with 24/7 support.

Industries We Serve

We modernize applications that power regulated, data-driven, and mission-critical operations.

Finance & Insurance

Banking systems, insurance platforms, and fintech applications with compliance and security focus.

Healthcare & Hospitals

EHR systems, patient portals, and medical applications with HIPAA compliance and data security.

Manufacturing & Field Service

ERP systems, field service platforms, and manufacturing applications with IoT integration.

Government & Public Sector

Public sector applications with security, accessibility, and compliance requirements.

Retail & eCommerce

E-commerce platforms, POS systems, and retail applications with scalability and performance focus.

Trusted by Modernization Leaders

Verified reviews from our modernization clients — explore the full reviews page to see detailed feedback.

"So far, they have delivered on all the ideas we entertained."
Rajiv John
Founder, Growthscape LLC
Read the full review
"One Team US was very receptive, made changes quickly, and understood exactly what we wanted."
Operations Manager
Trailer & Tractor Repair Company
Read the full review
"They are always willing to explain something in detail to make sure we completely understand."
Lonnie Giffin
Owner, LG-Solutions Unlimited
Read the full review

Technology Stack

Languages & Frameworks

  • Java
  • .NET Core
  • Python
  • Node.js
  • TypeScript
  • C#

Cloud & Databases

  • Azure & AWS
  • Kubernetes & Docker
  • PostgreSQL & MySQL
  • MongoDB
  • Redis
  • Azure DevOps

Tools & Workflows

  • CI/CD Pipelines
  • Terraform & Ansible
  • GitHub Actions
  • Jenkins
  • Monitoring & Logging
  • API Gateway

Application Modernization FAQ

How long does application modernization take?+
Most modernization projects take 3–12 months depending on complexity, system size, and migration strategy. We use phased approaches to minimize disruption and deliver value incrementally.
What does a typical modernization engagement cost?+
Budgets vary based on system complexity and scope. Assessment projects start around $25K, while full modernization typically ranges from $150K–$500K. We provide detailed estimates after initial assessment.
Will there be downtime during migration?+
No. We use zero-downtime migration strategies with parallel running systems, ensuring business continuity throughout the transition. Data integrity and system availability are maintained at all times.
What technologies do you use for modernization?+
We use cloud-native technologies including Azure, AWS, Kubernetes, Docker, microservices architectures, and modern frameworks like .NET Core, Java Spring, and Node.js. Technology selection depends on your specific requirements.
Do you provide post-migration support?+
Yes. We offer comprehensive post-migration support including performance optimization, monitoring, bug fixes, and feature enhancements. Support plans are tailored to your needs with 24/7 coverage available.

Let's Modernize Your Applications

Schedule a strategy session with our Troy, Michigan leadership team to map your modernization roadmap, timelines, and rollout plan.