SEO is a complete word for digital marketing, it helps you to improve your online presence and support for your business growth. When at all big search engine google, yahoo and bing, someone searches any information search engine display information as per keyword use by the user. these search engine display result as per their algorithm. display your business information on the first page of a search engine is important all business these days. we can use SEO for any type of search for example image search, video search, news search academic search and industry search etc. organic search, natural search or earned these terms are used for search appear on the first page.