The 1990S: Inception of SEO: Early search engines like Yahoo, Altavista, and lycosSimple keyword matching.
Early 2000s: Algorithm Updates: Introduction of indonesia mobile number list Google, age rank. Focus on backlinks and link building.
Mid-2000s: Content Quality: Rise of content relevance, keyword stuffing penalties, Google Florida updates.
Late 2000: Local SEO: introduction of Google Maps and local search optimization.
Early 2010s: Panda and Penguin” Focus on content quality, penalizing low-quality links and thin content.

The mid-2010s: Mobile SEO: Mobile-first indexing. Responsive design importance.
Late 2010s: AI and Machine Learning: Introduction of Google, Rankbrain, Focus on user intent and behavior.
2020s: Core web vitals: Emphasis on site speed, user experience, and technical SEO.