Consistency across interface
A sense of unity to the brand, across portals; with a higher reusability factor can be achieved with a well built Design System
Communicating users
The interface design helps communication with users by reducing Cognitive Load & Learnability
Scalability
For evolving applications and enterprise portals Interface Design Architecture improves code quality and maintainability.
Reduce visual clutter
Removing visual clutter will help your users complete their journey through your interface efficiently