# Microsoft.VisualStudio.Composition ## Features * A new, faster host for your existing MEF parts * Reuse the MEF attributes you're already using * `ExportFactory` support to create sub-containers with scoped lifetime (i.e. sharing boundaries) ## Documentation * [Why VS-MEF?](https://github.com/microsoft/vs-mef/tree/main/doc/why.md) * [Differences between .NET MEF, NuGet MEF and VS MEF](https://github.com/microsoft/vs-mef/tree/main/doc/mef_library_differences.md) * [Hosting](https://github.com/microsoft/vs-mef/tree/main/doc/hosting.md) * [more docs](https://github.com/microsoft/vs-mef/tree/main/doc/index.md)