How do you access secrets from ASP.NET Core?

Short answer: Use Azure.Extensions.AspNetCore.Configuration.Secrets package to load secrets into IConfiguration. var builder = new ConfigurationBuilder() .AddAzureKeyVault(new Uri(" new DefaultAzureCredential()); var configuration = builder.Build();

Example code

var secretValue = configuration["MySecret"];

Real-world example (ShopNest)

Connection strings and payment keys live in Key Vault—not in source control or plain appsettings on disk.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.