2 articles
Legacy Systems
Old databases, spreadsheets and line-of-business applications often carry rules nobody wrote down. These guides show where to find those rules, how to profile the data and how to test changes before improving or replacing the system.
Legacy SystemsBusiness Software
Luka Abramovic24 min read
End of Support 2026: Windows, Office, SQL Server and Runtime Dates
End of support 2026 dates for Exchange Online EWS, Office 2021, Windows Server, SQL Server and runtimes, with what breaks first and how to find what you run.
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Legacy SystemsBusiness SoftwareSystems Integration
Luka Abramovic18 min read
Legacy System Examples and Where Each One Hides Its Rules
Eight legacy system examples from ordinary businesses, the exact places each one hides its rules, jobs and logins, and a one-page discovery sheet.
GuideRead article