Search Engine Optimization is the process of helping search engines crawl, understand, index, and rank content while improving usefulness for searchers.
It matters because organic search compounds over time when pages are technically accessible, useful, differentiated, and connected to real search intent. Clear SEO terminology also helps teams avoid shortcuts that create long-term risk.
Example
A service page can be made easier to discover through relevant internal links, a clear title and useful answers to buyer questions. Search engine optimization includes verifying that crawlers can access the page, without treating technical eligibility as a ranking guarantee.