• Overview
• Pre-Installed Site Extensions
• Pre-Installed Site Extensions Package
• Private Extensions
• Named private extensions
• Top level private extension
• Authoring XDT transforms
• Publish Site Extension to Nuget Gallery
• Updating for site extensions
• Install/Uninstall scripts for gallery extensions
• Understanding what could go wrong with xdt transforms
• Invalid XDT
• Valid XDT that doesn't do what you want it to
• Transform does what you expect, but applicationhost.config semantic is not what you expect
• Debugging private Extensions
• Finding your applicationhost.config
• Finding the log of what happened during the transform
• Disabling the private extension transform
• Running transforms locally