Like a lot of things to do with computers, there's a certain amount of mystery attached to how does SEO work? This isn't helped with different people telling you different things that often contradict each other. They can't all be right, can they?
One of the biggest stumbling blocks with working out how SEO works is that - apart from an inner circle at companies like Google - no-one knows the precise mix of how search results are arrived at. But that actually doesn't matter too much. We know the main variables involved, just not the precise ratios they work in. A bit like cloning a famous recipe, we can get close enough.
SEO works because a computer needs a way to score a page to determine where it shows up in the results.
It needs to do that regardless of the words you type in and regardless of the language that you use.
When a search engine robot crawls your pages, it takes a snapshot of them and stores this so that it can analyse them in its own time.
Google and the other search engines have trillions of web pages indexed (a trillion is a million million). Because of the computing power involved, they have to process these pages in the background before they can add them to the search results. Which is why your site will often bounce around the search results before it settles somewhere.
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