The SEO is derived from the term "Search Engine Optimization" which has equivalent words such as SEO or search engine optimization, all of which are in the same sense and can be defined as follows: SEO (search engine optimization) does not mean deceiving or manipulating search engines with immoral methods. They have been created to help improve the visibility and relevance of websites in natural search results with the goal of reaching a high ranking. SEO can be considered as a set of methods for the strategic change of websites. This process addresses the most important factors of the page and increases its importance on the search results page. SEO is not a simple process that can be easily implemented because it requires a lot of knowledge, background knowledge and patience. Search engines are unpredictable by constantly changing their ranking algorithms, so the SEO engineers are in charge of maintaining their information in this area. SEO site or site optimization is one of the activities that is done by SEO. Google's ranking algorithm has more than 200 criteria for ranking a site. Therefore, SEO engineers need to understand the most important of these criteria for successful SEO implementation. Early start of SEO In early 1990, the first search engines began their work; some of the most popular were Infoseek, Alta Vista and Yahoo. At that time, people looked at search engines as a list, which looked like a yellow page, the original SEO by letter Alphabet was done. In this list, there are pages like AAA at the top of this list. With the continued growth of the Internet, newer search engines used sophisticated ranking algorithms. These algorithms used the keyword keyword density (the number of times a keyword or a phrase was used on a page, divided by the total number of page words) and key-words labels to understand the content of the websites. Following this growth, Cobra began to see more sites. By developing the ranking of pages by search engines, SEO engineers have sought to find ways to influence the ranking of these engines, either by using either ethical or non-ethical methods. An article published by the New York Times in November 1996 talked about web developers who used cognitive unethical methods at the top of the search results page. This article explains how web developers easily load a site with special keywords that are usually hidden behind the site's graphics, which results in search engines counting these keywords and increasing the ranking of the site. As stated above, getting high rankings for specific keywords at the beginning of the work is very convenient. By applying the unethical methods at that time, it was guaranteed to be placed at the top of the search results list. Today, search engine algorithms have become more complicated and it's very difficult for engineers to manipulate search engines, although this is a mouse and cat game between SEO engineers and search engines today, and it will continue. What is the purpose of SEO? The purpose of SEO is to help websites gain a high place in natural search results and to increase the link between pages and keywords entered by users. Showing the most pages associated with the search query has many advantages for both the user and the search engine, in which the user finds the most relevant search results, and the search engine is trusted because its algorithm shows the most relevant pages. . After Seebra began to improve ranking of sites in their natural search results, this process required knowledge and time to implement their own methods. Time is the largest initial investment to optimize a site or one page. Depending on how competitive keywords are used in optimization, SEO takes weeks or months to come to fruition. Although the results of search optimization may not be seen quickly, in the long run, the benefits of SEO increase site rankings and increase visitor numbers. For websites, it's very important that the first page of Google search results is one of the first three natural results, which includes 58.4 percent of the clicks. It is not surprising that websites compete with the products and services they sell to rank a search result. For example, the keyword "automated insurance" is responsible for 1.5 million Google searches per month, which means that the top three positions are 58.4% of visitors and 36.4% of visitors are in the first place. This is useful for many sites that are at the top of the search results, especially those that are added to the number of customers by increasing the site's traffic. Another study suggests that searchers are very keen on clicking search results on natural links; the study found that 72.3% of Google users clicked on search links on natural links, and only 27.3% of users clicked on links to paid lists. This is one of the other reasons why companies know the impact of SEO and are willing to spend time and money. In general, the objectives of the SEO can be summarized as follows: It has a great impact on the website. Creates a brand. Will increase traffic to the site. This made the website rank better on the search engine results page. Will increase sales of products. The best tool for advertising. What is SEO inside? (On Page SEO) Seo inside the page to directly control the code or content of your website, including text, image, link, etc.; Generally, everything you upload on your site relates to SEO On Page. This method is the basis of all optimization efforts because it is where you have the most control on it. Any changes that you make to your site content will impact the search results. Therefore, it is very important that the SEO On Page method is properly implemented before the SEO Off Page method. What is outside the page? (Off Page SEO) Unlike the SEO On Page method, which has been developed with high direct control of the website, the out-of-page optimization method includes all the improvements that are performed outside of your website; this includes all that can be done in obtaining a high ranking of your site. help. SEO Off Page focuses primarily on obtaining links (links that point to other sites from your site) and then optimizes the search engine using methods outside of the website. SEO Off Page is an unlimited process that is run by SEO engineers to get connectors. What is a hat-white seo? (White hat) In the technical terms of this area, the white hat refers to a set of techniques, methods, and strategies that follow the rules and guidelines of search engines. That does not mean deception or manipulation of search engines or users at all. This is also referred to as ethical ethics, because the reason is that it either has a long run or it uses the correct policies and policies to get high rankings in the search engine results. What is a seo hat - black (Black Hat) In other words, the term "black hat" refers to a set of commands used to deceive, play, and manipulate search engine algorithms with the aim of obtaining a high ranking. It's important to know that these methods are unethical and are not endorsed by any search engine, and the use of these methods will risk leaving the database forever. Doing black-hat SEO tactics may result in a sudden increase in search results, but could result in fines being paid or completely removed from the search engine database index.