Binding configuration sections to POCOs?

Short answer: Bind config to strongly typed objects: public class MySettings {

Example code

public string ApiKey { get; set; }
public int Timeout { get; set; }
} services.Configure<MySettings>(config.GetSection("MySettings")); Use via IOptions<MySettings>.

Real-world example (ShopNest)

ShopNest registers AppDbContext as Scoped and IMemoryCache as Singleton. Putting DbContext in a Singleton causes threading bugs.

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.