Legacy Application Modernization Services
Ignyte Software migrates legacy applications, such as old .NET Framework systems, Access databases, Excel-driven processes, and unsupported vendor software, to current, secure, supported platforms without losing the business logic your operations depend on.
What we deliver
- .NET Framework applicationstoModern .NET
- Access databases and Excel processestoWeb applications
- Legacy workloadstoModern infrastructure
- Orphaned, undocumented codetoDocumented and under source control
- One big-bang rewritetoIncremental, strangler-pattern migration
- Lexington, KYCentral Kentucky & nationwide
- Staged, reversible migrationsEvery cutover has a tested rollback
- Current .NET and SQL ServerPlatforms that still receive security updates
- First conversation is freeWe reply within one business day
Last updated September 3, 2026
Legacy Systems We Modernize
Most of the systems we take on started as a reasonable solution the business has since outgrown. The technology fell out of support, the person who built it moved on, or the business changed faster than the software could. These are the situations we see most often.
Older ASP.NET Web Forms, WinForms, and .NET Framework services that no longer receive security updates and are hard to host, hire for, or extend.
Business-critical Access tools that have hit file-size, concurrency, or reliability limits and need to become a multi-user web application.
Spreadsheets with fragile macros and manual steps that became the system of record for an important workflow.
Systems whose original developer is gone and whose behavior now lives only in the running application.
Off-the-shelf products the vendor has abandoned or priced out of reach, or that no longer fit how you work.
A Staged Modernization Process
Modernization starts by learning what the current system does, which business rules it enforces, where its data lives, and which integrations depend on it. What we learn determines whether the right first move is stabilization, migration, or replacement of one high-risk part. The existing system stays in service throughout, and we move work across in stages (the strangler pattern), so there is no month-long freeze and no single cutover that has to go perfectly.
- 1Assess
Map workflows, data, integrations, failure points, and unsupported components.
- 2Stabilize
Get source control, backups, deployment steps, and monitoring in place before we change any behavior.
- 3Sequence
Choose the smallest change that removes the most operational risk while the rest of the system keeps running.
- 4Migrate
Move code and data in stages, with checks that compare the new system's results against the existing one.
- 5Cut over
Switch users only after the new path works, rollback is tested, and dependent systems are ready.
- 6Support
Stay on after cutover to monitor the new system, fix the issues that only show up once people use it day to day, and keep it patched and documented as the business changes.
How We Keep Modernization Low-Risk
The riskiest moment in a modernization is the day you switch the new system on. We plan every project so that day is small, reversible, and boring.
Users stay on the current application until the replacement for their part is ready, so there is no gap in service.
We compare the new system's results with the existing system's, on real data, before anyone relies on them.
We test the rollback before we go forward. If something breaks, we revert.
Modernizing one module at a time keeps each release easy to review, test, and reverse.
What You End Up With
Newer technology is only part of the goal. You should end up with a system your team can run, trust, and change.
- A platform on current .NET and SQL Server that still receives security updates.
- Your data preserved, migrated, and verified, with its business rules intact.
- Documentation and source control, so the system is no longer trapped in one person's head.
- A codebase your team can extend without breaking what already works.
Technologies
Modernization Resources
How we approach the most common modernization projects, in more depth.
Legacy .NET modernization without a full rewrite
How we stage a migration and avoid a big-bang rewrite.
Read the guide GuideReplacing an Access database with a web application
Moving Access data to SQL Server and the interface to the web.
Read the guide GuideTaking over an undocumented codebase
How we map and stabilize a system nobody fully understands.
Read the guideCommon Questions
Yes. We routinely take over undocumented systems, map the business logic, and stabilize them before modernizing.
No. We favor incremental modernization: replace the riskiest pieces first while the old system keeps running.
Yes. Verified data migration is part of every modernization plan, and we preserve and validate legacy data before cutover.
Yes. We migrate in stages so the current system stays in service, and we move users to the new one only after each piece is proven and rollback is ready.
We assess each part by how much operational risk it carries and how much modernizing it would gain. Stable, low-risk parts can be re-hosted or left in place, while fragile or unsupported parts are rebuilt first.
Out-of-support .NET Framework, Access, and vendor platforms stop receiving security patches, which leaves known vulnerabilities open. Moving to a supported platform closes that gap and restores a path for future updates.
Ready to talk about legacy modernization?
We reply within one business day, and the first conversation is always free.
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