SEO's history began in the *1990s* with early search engines like Yahoo, where webmasters used keyword stuffing to rank higher. In **1998**, Google introduced **PageRank**, shifting focus to quality backlinks and relevance.
In the *2000s**, Google's algorithm updates (e.g., **Florida* in 2003, *Caffeine* in 2010) prioritized content quality and user experience. Major updates like *Panda* (2011) and *Penguin* (2012) cracked down on spammy practices, while *Hummingbird* (2013) improved understanding of user intent.
Since *2015**, AI-driven updates like **Rank Brain* and *BERT* have made content quality, relevance, and user experience essential for SEO success.
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