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GOOGLE ALGORITHM
& HISTORY TIMELINE

1996 — 2026: FROM PAGERANK TO GEMINI AI

1. The Genesis Era

1996: BackRub
The precursor to Google. Larry Page and Sergey Brin launch an algorithm at Stanford that ranks pages based on backlink importance.
1998: Google Is Born
Official launch. The mission: "Organize the world's information." The PageRank patent changes the web forever.
2000-2003: Monetization
AdWords (2000) and AdSense (2003) launch. The "Florida" update (2003) kills early keyword stuffing tactics.
2005-2009: Expansion
Google Maps, YouTube acquisition, and "Universal Search" (blending news, images, and video into results).

2. The Quality Revolution (The "Zoo" Updates)

2011: Panda
Targets "thin" content and content farms. Quality becomes a primary ranking factor.
2012: Penguin
Targets manipulative link-building and "black hat" SEO. Penalizes spammy backlink profiles.
2013: Hummingbird
A total core overhaul. Shifts focus from keywords to "Conversational Search" and user intent.
2014: Pigeon
Revolutionizes Local Search, tying web ranking signals more closely to local map results.

3. AI & Mobile Era

• 2015: RankBrain – Machine learning begins processing search queries to understand context.
• 2015: Mobilegeddon – Mobile-friendliness becomes a ranking signal.
• 2018: BERT – Neural network technique for natural language processing (NLP).

4. User Experience Era

• 2019: E-A-T – Expertise, Authoritativeness, and Trustworthiness take center stage.
• 2021: Core Web Vitals – Speed, stability, and visual load become official ranking factors.
• 2021: MUM – Multitask Unified Model for complex search tasks.

5. The Generative AI Era (Present)

2022: Helpful Content
A massive update penalizing content created solely for search engines rather than humans.
2023: Bard & SGE
Search Generative Experience (SGE) beta launches. AI-generated summaries appear above results.
2024: Gemini Integration
Bard is rebranded to Gemini. AI Overviews become a standard feature for informational queries.
2025-2026: AI Mode
Google moves to a "Conversational First" interface. Discover Core Updates target personalized feeds.

Current Status: 2026 Ranking Signals

• March 2026 Core Update: Targeted scaled AI content and parasite SEO. Nearly 25% of top results saw volatility.
• February 2026 Discover Update: First-ever core update specifically for the Discover feed.
• E-E-A-T Expansion: "Experience" (first-hand proof) is now the most critical signal to survive AI commoditization.

Evolution • Intelligence • Intent • Authority