What is Search Engine Optimization (SEO)?
SEARCH ENGINE OPTIMIZATION
Functions performed by search engines
1. Crawling –This is the process of collecting all the web pages connected to a website. The software performing this is called a crawler or a spider.
2. Indexing – When crawling is done, an index is created for all collected web pages, and they are kept in a vast database for future retrieval. Indexing involves merely identifying the words and expressions that define a web page and assigning a specific keyword to the web page.
3. Processing – Whenever you click search, the search engine compares your search request to the database of indexed pages in storage
4. Retrieving Results – The final step performed by the search engine is displaying the collected results on your screen or browser.
To better understand what SEO is, we need a definition of the main aspects of it on a basic level.