Microsoft Lists Form Design

SharePoint turns 25 in March 2026. I didn’t plan to spend most of my career alongside it — but from teaching early versions and writing books, to building Lightning Tools and surviving every platform reinvention, here’s what 25 years of SharePoint looks like when you’ve actually lived through it.

Legacy SharePoint forms are no longer a future concern. In SharePoint Online, InfoPath-based forms will stop working. On-premises, they are already unsupported. This post explains why rebuilding forms isn’t enough — and why migrating the underlying XML data is the real key to modernising safely.