1. Panda (2011): Targeted low-quality, thin, and duplicate content to improve content quality in search results.
2. Penguin (2012): Focused on eliminating manipulative link-building practices and penalizing spammy backlink profiles.
3. Hummingbird (2013): Enhanced Google's understanding of search intent and natural language queries.
4. Mobile-Friendly Update (2015): Boosted rankings for mobile-friendly websites in mobile search results.
5. RankBrain (2015): Introduced machine learning to better interpret search queries and user intent.
6. Medic Update (2018): Prioritized E-A-T (Expertise, Authoritativeness, Trustworthiness) in health and YMYL (Your Money, Your Life) websites.
7. Helpful Content Update (2022): Rewarded useful, people-first content and demoted clickbait and overly SEO-driven content.