Legacy App Modernization
Old apps rebuilt on a modern stack, with their business rules carried over and improved.
- Access, spreadsheet and in-house apps
- Rules extracted from old code
- Phased switch-over
Old Access databases, macro spreadsheets and aging in-house apps still run critical work. Data Semantics rebuilds them as modern, secure apps: Power Apps where low-code fits, custom web and mobile apps where it doesn’t, plus portals and ERP or CRM extensions.
Apps today
Access databasesMacro spreadsheetsOld in-house appsEmailed formsUnsupported codeAI-assisted delivery
Developers own every line
Rebuilt as
Power AppsReact & .NET web appsMobile appsPortalsData Semantics rebuilds aging business applications as modern, secure apps: Power Apps, custom web and mobile apps, customer, supplier and broker portals, and extensions for Dynamics 365 and Salesforce. AI agents analyze the old application, draft requirements and generate screens, code and tests. Our developers own design, security and release through DevSecOps.
Access databases, macro spreadsheets and in-house systems were built years ago by people who may have left. They hold business rules nobody has written down, can’t be reached from a phone and can’t be used by AI. Modernizing them removes the risk and opens the data and actions to people and AI agents.
Low-code where it fits, custom code where it doesn’t, always connected to your systems.
Old apps rebuilt on a modern stack, with their business rules carried over and improved.
Business apps built fast on Power Platform, governed and maintainable.
Custom applications where performance, scale or experience needs more than low-code.
Self-service for the people outside your organization.
Your ERP and CRM extended to fit your processes, without fragile customization.
Assistants and agents built into the apps people already use.
AI handles the repetitive parts of building software, so developers focus on design, security and quality. Every line is reviewed and shipped through DevSecOps.
AI reads old app code, forms and data to extract the screens, rules and data model behind it.
You get: old logic understood
Checked by: developers and business users
AI turns workshops and the old app into user stories, process maps and acceptance criteria.
You get: requirements in days
Checked by: the product owner
AI drafts screen layouts and flows that follow your brand and accessibility standards.
You get: screens to review fast
Checked by: designers and users
AI drafts components, workflow logic, APIs and data access.
You get: less boilerplate
Checked by: developers review all code
Automated tests are written for every feature and release.
You get: releases you can trust
Checked by: QA engineers
Technical and user documentation is kept current with every release.
You get: maintainable from day one
Checked by: developers
Tell us what it does and who depends on it. We’ll show you how we would rebuild it without stopping the business.
A short assessment, then a first release in weeks.
We assess your critical apps, pick the riskiest and deliver its first modern release.
A blended team of developers and AI agents that builds and improves your apps every sprint.
A Power App gives finance live visibility of cash moving between stores and banks, replacing manual reporting.
One platform for petty cash requests, approvals and payments across properties, with shorter reimbursement cycles and a full audit trail.
About app modernization
Power Apps suits internal business apps that need to be built fast and live inside Microsoft 365. Custom development suits customer-facing apps, complex logic, high scale or special user experiences. Data Semantics recommends per app.
AI helps extract logic from old apps, draft requirements, generate screens, code and tests, and keep documentation current. Developers review and own everything, so delivery is faster without lowering quality or security.
App modernization rebuilds an application your organization owns. Application data migration moves data from one packaged system to another, such as Oracle EBS to Dynamics 365. Data Semantics offers both, and often combines them when custom apps sit around an ERP being replaced.
What we build
Yes. Data Semantics uses AI to read the tables, forms, queries and macros, extracts the business rules, and rebuilds them as Power Apps on Dataverse or as custom web apps, with the data migrated and the old file retired.
Yes, including customer and tenant portals, supplier onboarding and invoice portals, and broker portals, connected to your ERP and CRM.
Yes. Data Semantics builds extensions, custom screens and logic using upgrade-safe patterns, and integrates them with your other systems.
Delivery
Yes. Data Semantics rebuild in phases, run old and new side by side where needed and switch users over in stages.
With Data Semantics, a short fixed-price assessment is followed by the first modern release in weeks, not months. Larger apps are then delivered in phases, with users moved over in stages. The assessment and first release run as a fixed-price engagement. After that, an app development team of developers and AI agents continues as a monthly service.
Security and support
Through DevSecOps: secure design, code review, automated security testing, managed secrets, and release controls on every deployment.
Your team, ours or both. Code lives in your repositories with full documentation, and we offer ongoing development and support.
Tell us about it. We’ll assess it and show you a modern version, built and tested in weeks, without stopping the business.