The Beginner's Guide to SEO

Được đăng lên bởi Tracy Leung
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calculating relevancy & rankings and serving results.

Crawling and Indexing
Crawling and indexing the billions of
documents, pages, files, news,
videos and media on the world wide


Providing Answers
Providing answers to user queries,
most frequently through lists of
relevant pages through retrieval and

Imagine the World Wide Web as a network of stops in a big city subway
Each stop is its own unique document (usually a web page, but sometimes a PDF, JPG or other

Once the engines find these pages, their next job is to parse the code from them and store selected
pieces of the pages in massive hard drives, to be recalled when needed in a query. To accomplish
the monumental task of holding billions of pages that can be accessed in a fraction of a second, the
search engines have constructed massive datacenters in cities all over the world.
These monstrous storage facilities hold thousands of machines processing unimaginably large
quantities of information. After all, when a person performs a search at any of the major engines,
engines work hard to provide answers as fast as possible.

When a person searches for something online, it requires the search engines to scour their corpus

optimization is meant to influence.
To the search engines, relevance means more than simply having a page with the words you
further than this simplistic step, and found that their results suffered as a consequence. Thus,
through iterative evolution, smart engineers at the various engines devised better ways to find
valuable results that searchers would appreciate and enjoy. Today, hundreds of factors influence

Importance is an equally tough concept to quantify, but Search engines must
do their best.
site, page or document, the more valuable the information contained therein must be. This
assumption has proven fairly successful in practice, as the engines have continued to increase

algorithms are often comprised of hundreds of components. In the search marketing field, we

You can surmise that search engines
believe that Ohio State is the most
relevant and popular page for the query

Search Engine Ranking Factors.

is less relevant/popular.

or How Search Marketers Study & Learn How to Succeed in the Engines
The complicated algorithms of search engines may appear at first glance to be impenetrable, and
the engines themselves provide little insight into how to achieve better results or garner more
traffic. What little information on optimization and...
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