To run any business the strategy should be known to the person, and if it is related to the marketing fields then it becomes more crucial for a marketing person to follow the strategies of marketing to get more sales. To get more sales a person needs to be reached to the target audience and consumers directly by following some specific rules .It becomes tricky to target people as it depends on place and regional location. The way to run a business depends on the product, service suitable for the target audience. In the business of SEO the traffic building becomes the key responsibility of an online marketer. This business also follows the same way a normal business does. The strategy of SEO on online marketing depends on one important strategy that is selection of keywords.

Keywords and key phrases are the major process by which the search engine will pick your site, so it is necessary that the accurate keywords are used and they are located to best place. If the keyword research is done properly then the web marketing becomes more rewarding for your site .The keywords are to selected according to your site and contents , they should make a match with each other and also the target audience matter should be kept in mind for better viewing. The placement of keywords on the different paged of your site should be unique and also should be included under the content.
The competition of ranking is very tough on the search engines like Google, Yahoo, and MSN. They filter the best pages based on genuine content and most searched keywords to rank the pages by using algorithms. That means the more searched keywords included in your page content will rise up into better page rank. More focused and crisp keywords not only increases your page rank but also responsible for traffic generation in your site which leads to a higher sales ratio for your site. Another aspect is that grouping of your keywords according to the section of your site also gives you better results.
It is also true that keywords research is time taking and should be done very carefully. But if it is done logically then the targeted traffic will be on your site with huge numbers and will retain with continuity. Whenever a search engine searches a page through visitors request it always take those keywords and search it by the introduction of the site i.e. what is the page is all about and how it answers to the search of the visitor. There are also many online solutions are present which provides you the best and competitive keywords to help you in getting a better traffic but research of your keywords on the basis of the statistics of the target audience between your product or service can lead to refined output which can take you to achieve a better sales ratio.
The ranking of the page depends on many aspects such as off page and on page optimization. Both  the stages are very much required to deliver a better page rank and all the effort based on proper and accurate keywords research which finally leads to the sites success.