The difference between SEO and SEM is simply that Search Engine Optimization is a subset of Search engine marketing or Search marketing as it is widely known.

SEO and SEM seem to be used interchangeably, but they’re actually two different practices. Here’s how to tell the difference between the two!

Ranking refers to where a URL appears on a SERP (Search Engine Result Page). Search visibility refers to how prominently a piece of content is displayed in search engine results.

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