What does ‘dynamic’ mean in C#?

In C#, the dynamic data type represents a type that can only be determined at runtime. When using the dynamic type, the compiler does not perform type checking, instead deferring it to runtime.

Using the dynamic type can make the code more flexible, allowing it to handle different types of objects without needing explicit conversion or using reflection. For example, dynamic types can be used to handle data obtained from external sources like databases or web services without needing to know the specific type of data in advance.

However, due to the special nature of the dynamic type, it can lose compile-time type safety, which may increase the risk of runtime errors when using the dynamic type. Therefore, caution should be exercised when using the dynamic type and it should be avoided to replace explicit types as much as possible.