Advantages of Multi-layer PCB:

High efficiency: Its enable more advanced design, manufacturing, and assembly techniques. So their inherent electrical characteristics allow them to achieve greater capacity and speed.

High Durability: Its use multiple layers of insulation between circuit layers. They are bonded together using prepreg adhesives and protective materials, making them more durable than standard PCBs.

Smaller size and lighter weight: Its use stacking and lamination techniques, resulting in smaller and lighter weight boards. This is one of its most prominent and highly acclaimed benefits.

Single connection point: Its use a single connection point that can be designed to work together on a board. This particular design simplifies the complex design of electronic devices and reduces size and weight.