Answer
The configuration system merges layered sources: appsettings.json, environment-specific JSON, env variables, command-line args, user secrets, and external sources. Binding and hot-reload supported.
Quick Answer
Configuration providers layer their values: appsettings.json base → environment-specific JSON → environment variables → command-line args. Each layer can override previous ones. Providers implement IConfigurationProvider. You can add custom providers (database, Vault, etcd) by calling builder.Configuration.Add(yourProvider).
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ