The Feature Manager in the Azure portal for App Configuration provides a UI for creating and managing the feature flags that you use in your applications. App Configuration offers the following benefits: A fully managed service that can be set up in minutes Flexible key representations and mappings Tagging with labels Point-in-time replay of settings Dedicated UI for feature flag management Comparison of two sets of configurations on custom-defined dimensions Enhanced security through Azure-managed identities Encryption of sensitive information at rest and in transit Native integration with popular frameworks App Configuration complements Azure Key Vault, which is used to store application secrets. Reference: https://docs.microsoft.com/en-us/azure/azure-app-configuration/overview