• OVERVIEW
  • SERVICES
  • MODELS
  • WHY CHOOSE US ?
  • OUR PROCESS
  • TECHNOLOGIES
  • FAQS

Application Modernization Solutions That Keep Your Business Running

Users keep working during the change: A phased strategy ships changes while the current system stays in service and under maintenance. During the Merit Logistics program, staff checked in through one new app that ran against the old ERP and its successor alike.

Business rules survive the new architecture: Every engagement opens with a code audit at no charge, run with read-only repository access, that records how the application behaves today and ends in a work breakdown you keep.

The right cloud for each workload: Each component lands on AWS, Azure or Google Cloud based on a cloud readiness assessment of its load, data and cost profile, and Saigon Technology is a Microsoft Solutions Partner for teams standardizing on Azure.

Your code and data stay protected: Work runs under ISO 9001 and ISO 27001 certified by BSI (UK). An NDA is signed before requirements are shared, and code and IP are assigned to you as work is delivered.

You see every release: One named Project Manager works with you directly, and your team gets Jira and code repository access to follow each change and talk with the developers.

Who we build for

  • Enterprise teams: Restructure core business applications release by release through an offshore development center.
  • Mid-market companies: Bring an aging product onto current platforms with senior engineers added through staff augmentation.
Talk to Our Application Modernization Leads
Linh Pham - Senior Solution Architect
Meet Linh Pham
Senior Solutions Architect with 13+ years designing secure, high-performance, AI-ready cloud systems for enterprises
Book an Appointment More Details
Trung Le - Business Analyst
Meet Trung Le
Business Analyst with 6+ years shaping AI-enabled solutions and 40+ pre-sales engagements into delivery roadmaps
Book an Appointment
over 400 software developers
400+
Software Developers
Over 14 years of experience
14+
Years in Business
Over 850 Projects Successfully Delivered
850+
Projects Successfully Delivered
rating on Clutch
4.8
Star Rating on Clutch

Our Application Modernization Services

Application modernization covers assessing an existing application and changing its architecture, code and hosting so it runs well on current platforms, with releases that keep users working. Our services span seven areas: long-running core systems, assessment and roadmap, end-of-life platforms, framework upgrades, cloud-native architecture, data platforms and AI features.
software development services - icon 7

Modernizing Long-Running Core Systems

We modernize core systems that have run the business for years and now carry rising maintenance costs, such as ERPs and back-office platforms, one module at a time. You keep the rules those systems enforce while their structure changes. A Senior Solution Architect leads each assessment.
chevron-up.svg
software development services - icon 6

Modernization Assessment and Roadmap

Our application modernization consulting services start with a review of code, dependencies and hosting, then a roadmap that orders each release by risk and value. You set scope and budget before any code changes. The approach is chosen per application, as our guide to application modernization strategy (7 Rs) explains, and a Senior Solution Architect reviews each roadmap.
chevron-up.svg
software development services - icon 8

Moving Off End-of-Life Platforms

We move applications off runtimes, operating systems and databases that no longer receive vendor security patches onto supported versions. You close known security vulnerabilities and keep vendor support in place. Data, integrations and scheduled jobs move in planned steps, and our legacy application migration guide explains how those steps are planned.
chevron-up.svg
software development services - icon 10

Framework and Platform Upgrades

We upgrade aging frameworks and front ends to current, supported versions while business logic stays in place. Your team works on a supported stack that still receives security updates. ARB Australia's warehouse app now runs on React Native in place of an Ionic version nobody maintained; see our software migration services.
chevron-up.svg
software development services - icon 9

Cloud-Native Architecture on AWS, Azure and Google Cloud

Our cloud application modernization services split workloads into containers, managed databases and microservices with clear APIs on AWS, Azure or Google Cloud. You scale the parts that carry load and pay for capacity as it is used. Saigon Technology is a Microsoft Solutions Partner, and hosting moves without code change sit with our cloud migration services.
chevron-up.svg
software development services - icon 1

Data Platforms Behind Modernized Apps

We restructure the databases, pipelines and reporting that a modernized application depends on, so new services read consistent data from their first release. Reports can be checked against the numbers your teams already use. Hoang Tran, Senior Data Engineer, reviews every data modernization blueprint.
chevron-up.svg
software development services - icon 4

AI Features for Existing Applications

We add AI and ML features such as search, document extraction and assistants to applications already in production, through APIs that leave the core intact. Your users get the feature inside the screens they already work in. Saigon Technology has 50+ AI projects behind it, and AI Tech Lead Phong Le leads this work.
chevron-up.svg

Case Studies: Modernization Projects We Delivered

Turn It Blue Ads

Turn It Blue Ads: A Platform Evolved Over Five Years

  • Challenge: The demand partner behind this self-service programmatic ad platform ceased operations in 2023. 
  • What we built: A partner-agnostic backend and consolidated analytics, delivered through more than 60 delivery items. 
  • Engagement / timeline: Five years with the same team since 2022, moving from fixed price to maintenance, enhancement and a dedicated team. 
  • Outcome: Partners are reconfigured in under a minute, and more than 130 maintenance items have been closed since 2022. 
  • Stack: .NET Core, React, PostgreSQL, AWS, Hangfire. 
  • Read the full case study
Merit Logistics: a legacy ERP rebuilt under an ODC

Merit Logistics: One Check-In App Across Old and New ERP

  • Challenge: A field-workforce ERP built by several vendors over many years had become hard to maintain and extend.
  • What we built: Documented business rules, kept the live ERP maintained, built its successor on .NET Core and added an Android check-in app using a PIN or face.
  • Engagement / timeline: An offshore development center under Agile Scrum, run in three phases with weekly effort reports.
  • Outcome: Employees checked in through a single app that worked with both systems while the change was under way.
  • Stack: .NET Core, React, Angular, Kotlin and Java for the Android app, Consul, Fabio, Grafana.
  • Read the full case study
ARB AUSTRALIA - 1

ARB Australia: Web and Mobile Built From the Same Source

  • Challenge: A warehouse app written in Ionic had gone unmaintained and showed performance issues that made support hard.
  • What we built: A React Native app for scan-gun warehouse work, covering QR import, label printing, cycle count and transfer, plus a CI/CD pipeline.
  • Engagement / timeline: Hourly and flexible, with a React Native developer and a part-time DevOps engineer, daily meetings and biweekly sprints.
  • Outcome: The same source code now produces both the web and mobile versions, and a move to Oracle Cloud has been researched.
  • Stack: React Native, REST API, Azure DevOps, Oracle Cloud.
  • Read the full case study

Get a Modernization Assessment for Your Apps

free demo

Why Choose Saigon Technology for Application Modernization Services

A good modernization partner tells you what to leave alone, keeps users working through every release, protects your code and IP, and keeps one team on the system after launch. Saigon Technology backs each of those points with named architects, published case studies and audited certifications. 

"Moving an application to the cloud doesn't modernize it on its own. We decide which parts need new boundaries, which need only an upgrade, and which should stay as they are, so the team spends effort where users will feel it." Linh Pham, Senior Solution Architect, Saigon Technology 

Some modules are better kept as they are, and changing them only adds risk and cost. Our architects say so in the assessment, and our Research Labs test new approaches on working demos before you commit budget. 

Modernization mistakes surface months later in production, so senior engineers lead every team. Rates are USD $22-$46/hr, senior-led. Fewer hours go to rework when seniors lead, so each finished release costs less.

Modernized apps often carry customer and payment records, so access is controlled from the first audit. Compliance follows the workload: HIPAA and PCI-DSS requirements are met where the workload needs them, GDPR is applied as standard when an engagement handles EU personal data, and SG PDPA is covered for Singapore work.

After go-live, the engineers who restructured the code know why each boundary sits where it does. Turn It Blue Ads has kept the same team for five years since 2022, and we rank #10 in the Medium category of Southeast Asia Best Workplacesâ„¢ in Technology 2026 (Great Place To Work).

Saigon Technology is a Microsoft Solutions Partner, which matters when Azure carries the workload. Delivery runs under ISO 9001 and ISO 27001, both certified by BSI (UK), so each release follows a documented, audited process.

An assessment done by a generalist misses the dependencies that break releases later. Linh Pham and Quy Truong, Senior Solution Architects, review the architecture behind each modernization plan and set the release order before engineers start work.

Saigon Technology brings 14+ years, 400+ developers, 850+ projects, 350+ clients and 3 development centers to each engagement. We publish the work and the timelines, and leave out outcome figures a client has not cleared.

A modernization partner is hard to judge before it touches your code. Engineers can start with a two-week risk-free trial, then continue as fixed price, staff augmentation, a dedicated team, an ODC or BOT as the program grows.

Why choose Saigon Technology 2026

Trusted by Global Clients

Partner-logo2 Partner-logo3 Partner-logo4 Partner-logo6 Partner-logo1 Partner-logo5 Partner-logo9 Partner logo

What Our Clients Say

Saigon Technology provided the expert advice and technical development needed for our platform. I truly appreciate their professionalism and ongoing support.

Jason Soo
CEO of Loan City, Singapore
star.svg star.svg star.svg star.svg star.svg

As the Owner and Director of ISMS Global, Australia, I understand perfectly how challenging it is to find a support team of skilled and professional developers to help grow a system. A few years ago, I found Saigon Technology Software (STS), led by Mr. Thanh Pham (CEO), and I have never looked back. STS has single-handedly taken ISMS camp management software from a concept on a napkin to an international product used by major companies around the world. If you are looking for a trusted partner to help you, then you should be talking to Thanh Pham.

Mr. Paul Upson
Director of ISMS Global, Australia
star.svg star.svg star.svg star.svg star.svg

During our collaboration, Mr. Thanh and his company, Saigon Technology, have consistently demonstrated world-class leadership and execution in complex fintech projects. His ability to scale and lead high-performing engineering teams, while maintaining cost-efficiency and product quality, has been critical to our technology operations. His strategic insights and leadership enabled us to significantly improve system stability and deployment velocity.

Abe Jarrett
Senior Vice President of Software Engineering at Origence, USA
star.svg star.svg star.svg star.svg star.svg

We value Saigon Technology’s strong support in managing the engagement from an internal delivery perspective. They were able to maintain team performance across a relatively large team, provide additional resources when required, and work collaboratively with us on matters such as gap time, discount proposals, and improvements to the working process. Their flexibility and consistent management support contributed positively to the overall partnership.

Sri Vijayasarathy
CTO of Axiagram, USA
star.svg star.svg star.svg star.svg star.svg

Saigon Technology has been a reliable and committed partner in our telehealth project. They consistently delivered on time, provided responsive 24/7 support, and were always available on WhatsApp, even after working hours, whenever we needed urgent assistance. What stood out most was their continuous attention to security and speed, which are essential for a healthcare platform. Their strong ownership and responsiveness made a real difference to the success of the project.

Eric Chiam
CEO of Minmed, Telehealth, Singapore
star.svg star.svg star.svg star.svg star.svg

Our Modernization Process: From Assessment to Rollout

Software Development Process

Application assessment

Engineers run a technical debt assessment of code, dependencies and hosting with read-only access and record the business rules the application enforces. Exit criterion: a work breakdown with prioritized risks. 

software development process

Target architecture

Architects choose the target structure and hosting for each component, including parts that stay as they are. Exit criterion: an approved design and release order.

Software Development Process

Pilot release

One low-risk module ships first as a pilot, or as a proof of concept when the approach is untested. Exit criterion: the pilot runs in production.

Software Development Process

Staged rollout

Remaining modules ship in planned releases while the current system keeps serving users. Exit criterion: each release passes acceptance tests.

Software Development Process

Parallel running and cutover

Old and new versions handle the same cases before traffic moves. Exit criterion: results match and rollback is tested.

Software Development Process

Run and optimize

The team that built it keeps maintaining it, cutting operational costs and fixing performance bottlenecks after launch. Exit criterion: an agreed support model is in place.

Technologies We Use in Modernization Projects

Our Insights

FAQs

The cost of modernizing your applications depends on the number of applications, their size and the target platform. Saigon Technology works at USD $22-$46/hr, senior-led (about SGD 28-59 for Singapore clients), and projects start from $10,000. A code audit at no charge comes first, so the estimate rests on your actual codebase. 

Modernization timelines depend on scope, technical debt, code quality and how many systems connect to the application. A pilot release usually comes first, then the remaining modules ship in stages, so users see change early instead of waiting for one long cutover. The assessment ends in a work breakdown that sets dates for each release.

Moving an app to the cloud changes where it runs, while modernizing it changes how it is built. A hosting move keeps the same architecture and its limits. Modernization restructures code, data and integrations into cloud-native apps whose parts scale and release on their own. Many programs do both, with the hosting move handled as a separate step.

Saigon Technology offers consulting before any code changes: a Senior Solution Architect reviews your applications and recommends what to change, upgrade or keep. Calls fit your hours, with 10-12h overlap for US teams and a Reston, VA team on 9-17 ET. Vietnam is 3-4 hours behind Sydney and 1 hour behind Singapore, and the Vietnam afternoon meets the European morning.

An application modernization service takes software your business already runs and makes it easier to change, scale and secure. The work usually includes an assessment, a target architecture, code and framework upgrades, cloud adoption where it fits, data restructuring and staged releases, with support continuing after launch.

Saigon Technology modernizes applications on AWS, Microsoft Azure and Google Cloud, choosing the platform per workload. Our AWS application modernization services move workloads onto containers, managed databases and serverless computing where they fit, with the same pattern on Azure and Google Cloud. Where data must stay on premises, a hybrid cloud strategy connects those systems to the cloud services.

Users keep working because changes ship in stages while the current system stays live and maintained. Old and new versions handle the same cases before each cutover, and rollback is tested first to guard against data loss. At Merit Logistics, employees used one check-in app connected to the old ERP and its successor throughout the transition.

Our modernization teams work with .NET and Java back ends, Node.js, React and React Native front ends, Docker and Kubernetes for containerization, and AWS, Azure and Google Cloud for hosting. The approach is technology-agnostic: the final stack follows the assessment, and a component stays on its current technology when changing it adds no value.

The team that modernized the application can stay on to maintain and extend it, and the engagement model can change as your needs do. Turn It Blue Ads has kept the same team for five years since 2022, with more than 130 maintenance items closed. Ongoing work runs through our software maintenance and support service.

Get an Assessment of Your Applications

Send your application portfolio and business objectives; a solution architect reviews them and returns an assessment and modernization roadmap.

    Contact Message Box

    Schedule a Demo with Our Industry Experts

    Book a free 30-minute call

    • See case studies aligned with your requirements
    • Validate our industry experience
    • Confirm technical fit for your project
    Schedule a Demo

      Your RFP, reviewed by experts in 48 hours

      AI-accelerated path from brief to working prototype. Engineers, not sales.
      • Clickable prototype of your core user flow
      • Workflow visualization mapping the full system
      • Architecture direction covering stack, integrations, and scale
      • Technical recommendation call with our engineering team
      Free Demo Campaign