Larger features may take a long time to develop, but you still want to deploy production updates during development. Or maybe you want the users to be able to preview upcoming features? Either way, feature flags can resolve the issue.

In this presentation we take a look at using feature flags in an ASP.NET Core application running in Azure App Service. We use the Microsoft.FeatureManagement library to support both development-time feature flags and user-specific preview feature flags. The Azure App Configuration service's feature flag support is also explored. The sample application source code and other files will made available to the audience.