It is a well known fact that businesses need marketing to survive. No matter how good is your product or  how excellent are your services or ideas, you need to reach out to masses in order to generate sales,  otherwise you will get to nowhere.
 
The importance of marketing was also highlighted by the CEO of  Nike, Phil Night who once said that,  
 
“The most important thing we do is market the product. We have come around to saying that Nike is a  marketing-oriented company, and the product is our most important marketing tool”. -Phil Knight, CEO Nike.
 
As we all know that, products and services changes with demand and so does the marketing techniques.  Previously print media, radio and television were considered to be the sources of marketing but now  with the advent of internet, online marketing is flourishing day by day and is becoming the fastest and  the inexpensive source of sharing information almost everywhere around the world.