SEO or Search Engine Optimization is the technique to optimize of your site for Search Engines (Google, Yahoo, Bing etc.) so that Search Engines will display your site or web pages on SERP (Search Engine Results Page). It is the promotion of our sites through using Search Engines. Nowadays, SEO is growing field and it becomes popular day by day like other IT fields such as Web Development, Web Designing, Graphics Designing, Web Hosting etc. SEO is just not only all about rankings and keywords but also it is the promotion, sells, traffic and business growth by online techniques.
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