The Differences Between SEO and SEM

What are the main differences:

SEO: SEO (Search Engine Optimization) is the process of optimizing a website's content, structure, and technical aspects to improve its organic (unpaid) search engine rankings. The goal of SEO is to increase the website's visibility in organic search results.

SEM: SEM (Search Engine Marketing) encompasses various paid advertising strategies, such as pay-per-click (PPC) advertising, to promote a website in search engine results. It includes both paid search ads and other forms of online advertising.

What is the differences between SEO and SEM? SEO and SEM are both distinct but related strategies used in online marketing to improve a website's visibility in search engine results pages (SERPs).
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