Application Modernization
Classic ASP & Legacy PHP to Modern Code
We modernize Classic ASP and ASP.NET Web Forms applications into .NET Core, and upgrade legacy PHP applications to current PHP versions. Keep the software your business runs on, without the security risks of unsupported code.
Request an AssessmentClassic ASP to .NET Core
Rewrite aging Classic ASP (VBScript) applications in modern .NET Core, keeping your business logic and the workflows your team relies on.
ASP.NET Web Forms to .NET Core
Move ASPX Web Forms applications off the old .NET Framework and onto modern, cross-platform .NET Core with current security support.
Legacy PHP Upgrades
Upgrade outdated PHP 5 and 7 applications to current PHP versions, fixing deprecated code and closing known security holes.
Code Assessment
We review your existing code, servers, and dependencies, then give you a clear plan with costs and priorities.
Database Upgrades
Upgrade outdated SQL Server and MySQL databases, clean up data, and set up reliable backups.
Hosting & Security
Run the modernized app on supported, patched infrastructure in our datacenter, with ongoing maintenance.
How It Works
Assess
Inventory your apps and find what is costing you the most.
Plan
Map out the conversion to .NET Core or modern PHP, in stages.
Modernize
Migrate and upgrade in stages, testing at every step.
Support
Monitor, maintain, and keep improving after launch.
Why Southern Iron Systems
- Turn insecure legacy apps into modern, secure software
- Your features and workflows stay intact
- Lower hosting and licensing costs
- Ongoing support after go-live
Common Questions
Which legacy applications do you modernize?
Our focus is Classic ASP applications, ASP.NET Web Forms applications using ASPX, and legacy PHP. We move Classic ASP and Web Forms to modern .NET Core and upgrade older PHP applications to supported PHP versions. Database upgrades and hosting can be part of the work.
Can we keep the features our staff already use?
Keeping your business logic and day-to-day workflows is central to the project. The assessment identifies those requirements, and staged testing checks the modernized application against them. Bring examples of critical reports, integrations, and less obvious workflows so they are not overlooked.
Do we have to replace the whole application at once?
No. Our process plans modernization in stages, with testing at each step. The right boundaries depend on the code and its dependencies. We review those first rather than assuming every application can be split in the same way.
What determines the cost and timeline?
The size of the codebase, unsupported dependencies, database changes, integrations, and testing requirements all affect the work. Our code assessment reviews your application, servers, and dependencies and produces a plan with costs and priorities. A fixed timeline cannot be confirmed from the application language alone.
What happens after the modernized application goes live?
We offer ongoing maintenance and hosting on supported, patched infrastructure in our datacenter. Discuss the support scope alongside the development work, including who will own routine maintenance and how future changes will be handled.