Explanation
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