How Keywords are implemented for optimization?

[virendra]

The best way to opt and implement keywords is to designate those keywords which are popular, relevant to our content, comprises high search volume and effective. Stuffing and other employment of keywords must be avoided. In order to get best result and effect, our pages shouldn’t contain a keyword density more than 3-4%. Including keywords in title and description is highly recommended.

[dkos]

Thanks Virendra. This was really helpful.