A PCB circuit board is the most critical part of an electronic product. Manufacturers of electronic products are always under pressure to reduce the manufacturing costs. They can do so easily by designing and developing highly efficient PCBs. You can connect a large number of components on a very small profile PCB. If you go for multilayer PCB, you will be able to accommodate lots of components in a small space. Just provide proper heat escape feature for components that heat up a lot during the operation, and you will have a successful electronic product that will keep working for years without any problem.
Even for the prototype purpose, you are going to need a high quality PCB that is as close to the final PCB as possible. You have to take help of a PCB fabrication service company to get your PCB made to your specifications. Just provide the Gerber file of the PCB and some other details, such as the type of material used to make your PCB. High quality PCB manufacturing ensures highly accurate copper connections. Even the soldermask layer and silkscreen prints have high quality.