dotnet-secrets-management

To securely manage .NET application secrets, use the user-secrets tool for local development and environment variables for production. Avoid hardcoding credentials in appsettings.json or source control to prevent accidental exposure across environments.

The best way to bind environment variables to strongly-typed configuration is using the Options pattern with IConfiguration binding. This approach validates secrets and securely injects sensitive configuration data into your .NET application classes.

Rotating secrets in a .NET application without downtime requires implementing specific rotation patterns within your configuration pipeline. Plan safe transitions between credentials and utilize managed identity to eliminate hardcoded secrets in cloud environments.

You should not use appsettings.json to store connection strings and API keys for local development because it risks committing secrets to source control. Instead, use the dotnet user-secrets tool to store sensitive data outside your repository.

You should use managed identity instead of environment variables for production secrets because it eliminates the need to manage credentials entirely. This best practice secures cloud resources without storing or rotating sensitive configuration data manually.