In this episode of Ask Google Webmasters, John Mueller explains how mobile-first indexing works for smart phone search results, what the difference between mobile-first indexing and mobile friendliness is, and whether Google is planning to provide opt-in/opt-out for this type of indexing.

Preparing for mobile-first indexing → https://goo.gle/2HayU5I
Introduction of mobile-first indexing → https://goo.gle/2ZaGpj6

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