Different approaches are used and the main one dominating the web in Search Engines Optimization is Google Analytics.
It helps dramatically in targeting the correct Keywords to be used, per unique industry.
-: : Keywords rich contents
-: : Relevant in bound links
With the correct keywords ranging from 80 to 100, Google Analytics will display which ones are available and most sought for in any particular industry.
-: : It gives you charts to help determine who is your competitor in the same keyword selection
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How many inbound links each keyword generates
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Which ones to use and which ones is to avoid
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It displays the ranking of each keyword and if you are using a particular one how high your site is ranking
You are able to compare your ranking with the competitors using the same keywords.
By having the keywords displayed in graphs and organized columns, you can make smarter choices in utilizing targeted keywords. You can critically check page by page and see the ranking with the selected keywords and make appropriate changes.Every 10 to 14 days, run is generated on what pages and specific Keywords the Spiders are tracking and rank them by performance. At least 2 to 3 times a month the keywords need to be run through the analytics to find their rank and then updated in the site. Fine tune, Submit the site to Google and run reports again for Search Engines Optimization.