Describe the value of branding for both the buyer and the seller

Describe the value of branding for both the buyer and the seller. How would you go about developing a brand for cloud or virtualization products and services? What are some ways of promoting brand loyalty? Please also discuss why, for at least the personal computer, many customers prefer a no-brand-name PC? Is the price all that matters? Shouldn't they also be concerned about quality? Please explain and discuss.