Dependency Injection

I have many notes and even a presentation about this. Some notes for comparison below:

Benefits

• Reduces tight coupling
• Reduces need to establish new objects per use, if singleton behavior makes sense

.NET

• Often object instances to be passed in the constructor are referred to as "services."
• Added through the web application builder

// Framework services (built into core or an add-on)
builder.Services.AddControllerWithView();

// Custom services
builder.Services.AddScoped<ILoggerService, LoggerService>();