Google started is search engine service in 1998, it wasn’t until 2000 that it introduced a complex set of algorithm to help rank a webpage. Google’s algorithms are a complex set of mathematical and logical rules used to retrieve data from its search index and instantly deliver the best possible results for a query or the keyword. [More]

Search engine marketing or SEM is defined as a form of Internet marketing that comprises of promotion of website by increasing their visibility in search engine results pages (SERPs) primarily through paid advertising. [More]