What is branding ? why its immportant to company advertisement?

What is a brand or Branding? 

Why branding has importance to company advertisement? 

Answer to your question is very simple.  A brand is "The collection of perceptions that your customer has about your business". 

Please remember that brand lives in your customer's mind 

And the ideas that they have about your business.

Who provides Branding Services ?  

Just search the same for google you will get plenty of result pages for the same