What tools do you use for code coverage in .NET?

Short answer: Popular tools include Coverlet, Visual Studio Code Coverage, dotCover by JetBrains, and OpenCover, often integrated with CI pipelines.

Real-world example (ShopNest)

ShopNest unit tests cover pricing and discount rules so a bad coupon change fails in CI before customers see it.

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.