The search engine functions in the same way your library card functions to catalog books inside that labyrinthine store room of information. The only difference is that library cards are manually indexed by human minds. Search engines, on the other hand, are mostly administered by web robots or crawlers who sift through the word content of each and every webpage published on line.
SEO or search engine optimisation is a vast process and its success can be contributed to several elements like keywords, keyword phrases, title tags, meta tags, back-linking, reciprocal linking, dynamic linking, and much more. One of the oldest methods of search engine optimisation is using Meta tags.