Search engines are basically answering engines and they exist to discover, understand and organize content on the Internet in order to offer the most relevant results to their users.
In order to show up in the search results, your website needs to be visible to all of the search engines. This is one of the most important steps in SEO. If your website can’t be found, there is no way it will be ever shown on the search engine results page.
Search engines have 3 primary functions:
Crawling means collecting data to the database of search engines (for example – Google). Indexing allows Google to add you to search results. Indexing is creating the structure of data which is called index. This information define which websites are shown in search engine results and on which position. It depends on the plain text, topic, backlinks, and language or type of website.
The index has to be updated regularly in order to offer the newest websites and show newly-added articles on the search engine result page – SERP. It includes content that will best answer a searcher’s query, which means that results are ordered from most relevant to least relevant.
Crawling and indexing is the basis of technical SEO. It is very important to provide proper functioning. Your web won’t be shown in results of searching if you have the indexing forbidden. It also means that your website won’t get organic traffic.
A sitemap is basically the map of your web for search engines. It leads Google to all your important pages. It helps search engines to quickly find components of your site, essential website pages, and indexing all of the content. It is a list of all the sites that can be searched and found. The sitemap is a necessity especially for bigger e-shops that offer a big amount of different products.