2015-2019: Mobile and User Experience
- 2015: RankBrain and HTTPS
- Google introduced RankBrain, an AI-based component of its search algorithm designed to better understand and process complex queries. HTTPS became a ranking factor, encouraging sites to use secure connections.
- 2016: Mobile-First Indexing
- Google began transitioning to mobile-first indexing, meaning the mobile version of a site would be used primarily for indexing and ranking.
- 2017: BERT Update
- The BERT (Bidirectional Encoder Representations from Transformers) update improved Google’s understanding of natural language and context, particularly for complex queries.
- 2018: E-A-T and YMYL
- Google emphasized Expertise, Authoritativeness, and Trustworthiness (E-A-T), especially for “Your Money or Your Life” (YMYL) pages, which impact users’ health, safety, or finances.
- 2019: Core Updates
- Google rolled out several broad core updates, focusing on overall content quality and relevance rather than specific aspects like links or keywords.
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