What is SEO and why do I need it?

The first search engines emerged within the early 1990s. The web boom began. People realized that you could really make money from them. Thus they concluded that they needed to attract traffic. What was the best method of attracting traffic? Search engines. At that time the owners of the websites began to think about how they could reach the top positions ... SEO was born!

SEO


SEO focuses on organic search results, that is, what's not paid:

But hey, let's go to what matters and the reason why (I think) you are reading this chapter:

What is SEO?
Search engine optimization or search engine optimization is the process of improving the visibility of a website in the organic results of different search engines. It is also often named after its English title, SEO (Search Engine Optimization).

We just have to look at the large number of updates that have been made to Penguin and Panda, and how these have turned what was understood by SEO 180 degrees until recently. Now SEO is pursuing what Matt Cutts himself calls "Search Experience Optimization" or what is the same, "all for the user".

Although there are thousands of factors on which a search engine relies on position one page or another, it could be said that there are two basic factors: authority and relevance.

Authority is basically the popularity of a website. The more popular the more valuable the information it contains. This factor is the one that a search engine takes into account more since it is based on the user's own experience. 

This is not simply that a page contains the search term a lot of times (in the beginning it was like that) but rather that a search engine relies on hundreds of on-site factors to determine this.

SEO can be divided into two main groups:

On-site: On-site SEO is concerned with relevance. It makes sure that the web is optimized so that the search engine understands the main thing, which is its content. Within SEO On-site we would include the optimization of keywords, loading time, user experience, optimization of the code, and format of the URLs.

Off-site: Off-site SEO is the part of SEO work that focuses on factors external to the web page we work on. 

Once we know what SEO is, we have to differentiate whether or not we follow the search engine "recommendations". Black Hat SEO or White Hat SEO

2. Why is SEO important?

The most important reason why SEO is important is that it makes your website more useful for both users and search engines. Although these still cannot see an internet page as a person's does. SEO is important to assist search engines understand what each page is about and whether or not it's useful to users.

Now let's put an example to ascertain things more clearly:

Now what proportion are those 148,000 visits worth? Well, if for that term the typical cost per click is € 0.20 we are talking about quite € 29,000 / month. This only in Spain, if we've a business-oriented to many countries, 1.4 billion searches are administered every hour within the world. of these searches, 70% of clicks are on organic results and 75% of users aren't getting to the second page. If we take all this under consideration , we see that there are many clicks per month for the primary result.

SEO is that the best way for your users to seek out you thru searches during which your website has relevancy . These users search for what you offer them. the simplest thanks to reach them is thru an enquiry engine.

3. How do search engines work?

The operation of an enquiry engine are often summarized in two steps: crawling and indexing.

Tracking
A search engine scrolls the online crawling with what are called bots. These undergo all the pages through the links. Hence the importance of an honest link structure. even as any user would do when browsing the content of the online , they are going from one link to a different and collect data on those sites that they supply to their servers.

The crawling process begins with an inventory of web addresses from past crawls and sitemaps provided by other webpages. Once they access these websites, the bots search for links to other pages to go to them. Bots are especially interested in new sites and changes to existing websites.

It is the bots themselves that decide which pages to go to , how often, and the way long they're going to crawl that website, so it's important to possess an optimal loading time and updated content.

It is quite common that on an internet page it's necessary to limit the crawling of some pages or certain content to stop them from appearing in search results. For this, program bots are often told to not crawl certain pages through the " robots.txt " file.

Indexing
Once a bot has crawled an internet site and picked up the required information, these pages are included in an index. There they're ordered consistent with their content, their authority, and their relevance. during this way, once we make a question to the program it'll be much easier to point out us the results that are more associated with our query.

Search engines were initially supported the amount of times a word was repeated. once they did an enquiry , they tracked those terms in their index to seek out which pages had them in their texts, better positioning the one that had it repeated the foremost times. Currently, they're more sophisticated and base their indexes on many different aspects. The publication date, if they contain images, videos or animations, microformats, etc. are a number of those aspects. Now they provide more priority to the standard of content.

Once the pages are crawled and indexed, the time comes for the algorithm to figure - algorithms are the pc processes that decide which pages appear sooner or later in search results. After the search, the algorithms check the indexes. this manner they're going to know which are the foremost relevant pages taking under consideration the many positioning factors. and every one this happens during a matter of milliseconds.

More information
If you would like to continue investigating the processes of an enquiry engine, you'll have an interest in these pages:
  • Google infographic on how an enquiry works
  • How an enquiry engine works by Moz
  • 28 reasons why you would like SEO by program Land

Video: What is SEO and How Does it Work? (2020)


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