msengagementsdk 


Microsoft Engagement Framework
The Microsoft Engagement Framework helps you engage with your app customers with features such as A/B testing, facilitating user feedback, and more. After adding this NuGet to your project, add a reference to the Microsoft Engagement Framework extension (may require reopening project).
Microsoft Store Services SDK
The Microsoft Store Services SDK includes advertising and engagement frameworks. After adding this NuGet to your project, add a reference to the extensions you want, such as "Microsoft Advertising SDK for XAML" or "Microsoft Engagement Framework" (may require reopening project).