In this cut-throat age of Internet, advertisements via Web-Services form an important way to communicate with customers. SEO (Search Engine Optimization) and AdWords are such devices that promote advertising various products in the Internet World. They are responsible for displaying links in the Search results of any Search Engines like Google. AdWord is an online advertising service that will exhibit ads in accordance with the keywords used. It requires payment .SEO is the process of affecting the visibility of a website in any search engines’ unpaid (organic) results. Both are quite different with pros and cons.