Run tests. Example: (covered earlier in Mock DbContext) ✅ Fast, reliable for unit or light integration tests, but not suitable for relational behaviors (like joins, transactions). 🔟 How Do You Implement TestContainers for Integration Testing?

Short answer: TestContainers spins up real Docker containers (SQL Server, Redis) for integration testing, simulating production.

Explain a bit more

using Testcontainers.MsSql; var sqlContainer = new MsSqlBuilder() .WithPassword("yourStrong(!)Password") .Build(); wait sqlContainer.StartAsync(); var options = new DbContextOptionsBuilder<AppDbContext>() .UseSqlServer(sqlContainer.GetConnectionString()) .Options; // Use context in tests ✅ Benefits: Real database behavior CI/CD friendly Close to production setup Deployment & Hosting How to Deploy an ASP.NET Core App to IIS? TestContainers spins up real Docker containers (SQL Server, Redis) for integration testing, simulating production.

Example code

using Testcontainers.MsSql; var sqlContainer = new MsSqlBuilder() .WithPassword("yourStrong(!)Password") .Build(); wait sqlContainer.StartAsync(); var options = new DbContextOptionsBuilder<AppDbContext>() .UseSqlServer(sqlContainer.GetConnectionString()) .Options; // Use context in tests ✅ Benefits: Real database behavior CI/CD friendly Close to production setup Deployment & Hosting How to Deploy an ASP.NET Core App to IIS? TestContainers spins up real Docker containers (SQL Server, Redis) for integration testing, simulating production. Example: using Testcontainers.MsSql; var sqlContainer = new MsSqlBuilder() .WithPassword("yourStrong(!)Password") .Build(); wait sqlContainer.StartAsync(); var options = new DbContextOptionsBuilder<AppDbContext>() .UseSqlServer(sqlContainer.GetConnectionString()) .Options; // Use context in tests ✅ Benefits: Real database behavior CI/CD friendly Close to production setup Deployment & Hosting How to Deploy an ASP.NET Core App to IIS? IIS (Internet Information Services) can host ASP.NET Core apps via the ASP.NET Core Module, which forwards requests to Kestrel. Steps: TestContainers spins up real Docker containers (SQL Server, Redis) for integration testing, simulating production. Example: using Testcontainers.MsSql; var sqlContainer = new MsSqlBuilder() .WithPassword("yourStrong(!)Password") .Build(); wait sqlContainer.StartAsync(); var options = new DbContextOptionsBuilder<AppDbContext>() .UseSqlServer(sqlContainer.GetConnectionString()) .Options; // Use context in tests ✅ Benefits: Real database behavior CI/CD friendly Close to production setup Deployment & Hosting How to Deploy an ASP.NET Core App to IIS? IIS (Internet Information Services) can host ASP.NET Core apps via the ASP.NET Core Module, which forwards requests to Kestrel. Steps:

Real-world example (ShopNest)

ShopNest admin screens use MVC: controller loads data, Razor view renders HTML, Tag Helpers build forms safely.

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.