VS MEF (Visual Studio's flavor of the Managed Extensibility Framework)

Features

• A new, faster host for your existing MEF parts
• Reuse the MEF attributes you're already using
• ExportFactory<T> support to create sub-containers with scoped lifetime (i.e. sharing boundaries)

Documentation

• Why VS-MEF?
• Differences between .NET MEF, NuGet MEF and VS MEF
• Hosting
• more docs