1. Quality of traffic. You can attract all the visitors in the world, but if they’re coming to your site because Google tells them you’re a resource for Apple computers when really you’re a farmer selling apples, that is not quality traffic. Instead you want to attract visitors who are genuinely interested in products that you offer.
2. Quantity of traffic. Once you have the right people clicking through from those search engine results pages (SERPs), more traffic is better.
3. Organic results. Ads make up a significant portion of many SERPs. Organic traffic is any traffic that you don’t have to pay for.

Google (or any search engine you’re using) has “crawlers” that gather information about all the content they can find on the Internet. Crawlers bring all that data back to the search engine to build an index. The index is then fed through an algorithm which tries to match all the data with your query.

There are a lot of factors that go into a search engine’s algorithm, and here’s how a group of experts ranked their importance