What are search engines?
Search engines are searchable databases of web content. They’re made up of two main parts:
- Search index. A digital library of information about webpages.
- Search algorithm(s). Computer program(s) tasked with matching results from the search index.
What is the aim of search engines?
Every search engine aims to provide the best, most relevant results for users. That’s partly how they gain market share.
How do search engines make money?
Search engines have two types of search results:
- Organic results from the search index. You can’t pay to be here.
- Paid results from advertisers. You can pay to be here.
Each time someone clicks a paid search result, the advertiser pays the search engine. This is known as pay-per-click (PPC) advertising, and it’s why market share matters. More users mean more ad clicks and more revenue.
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