A high "Module Coupling" score indicates that a module:

A high "Module Coupling" score indicates that a module has excessive dependencies on other modules. In software architecture, coupling refers to how closely connected different modules are to each other. When a module has a high coupling score, it shows that it relies heavily on other modules to function, which can lead to several issues.

Excessive coupling often makes the system more complex, as changes in one module may necessitate changes in others. This can increase the risk of introducing bugs and make the system harder to maintain. High coupling can also impact the reusability of modules, as closely-knit dependencies can tie a module to a specific implementation, making it less flexible for use in different contexts or applications.

In contrast, a well-designed module typically exhibits low coupling, meaning it functions independently and has minimal interactions with other modules. This design principle supports maintainability and scalability, allowing for modifications with minimal impact on other parts of the system. Therefore, understanding that high coupling indicates excessive dependencies clarifies how to assess and improve module design in the context of software architecture.