![]() ![]() It means two objects are independent and an object can use another object without being dependent on it. It is not difficult when an application is small but in an enterprise level application, it is too difficult to make the changes. A tightly coupled object is dependent on another object that means changing one object in a tightly coupled application, often requires changes to a number When a class is dependent on a concrete dependency, it is said to be tightly coupled to that class. ![]() There are two types of coupling - tight coupling and loose coupling. Main aim is to address the challenges faced with 3-tier architecture or n-tier architecture, and to provide a solution for common problems, like coupling and separation of concerns. This architecture provides a better way to build applications for better testability, maintainability, and dependability on the infrastructures like databases and services. The Onion Architecture term was coined by Jeffrey Palermo in 2008. ![]()
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