Record Research Inc.
Decades of Billboard chart data moved off SQL Server 7, Classic ASP and Visual FoxPro onto Azure, while the books the business sells kept getting published.
IIS still ships the Classic ASP runtime, so a twenty-five-year-old VBScript application keeps limping along, with no debugger, no tests, no dependency management, and a security surface from another century. Because it never quite dies, it never gets budget, until the one person who understood it leaves.
I migrated a music-rights royalty system and a twenty-year Billboard chart archive off Classic ASP, the second one to Blazor on Azure, with the business publishing throughout. The pattern is the same every time: get the database somewhere safe first, put the new application beside the old one, and switch pages over one at a time. Where the old code has no documentation, an LLM-assisted pass with a confidence score on every record finds what the code actually does faster than reading it, which keeps the read phase short and bounded.
Your Silverlight application has no browser left to run in, and the people who built it have gone.
LightSwitch built your application. Nobody can change it now.
Delphi is alive. The one person who can read your Delphi 5 program is not on staff.
FoxPro. Yes, still. And the business still depends on it.
Your records are in Notes databases. Getting them out without losing them is the job.