Raj then moved on to talk more specifically about voice search. He referenced research from ComScore last year which stated that by 2020, 50% of searches will be conducted via voice. Further research from Parks Associates revealed a 140% year on year increase on the number of households with a voice search enabled device, further reinforcing the growing popularity.
Voice search is powered by knowledge graphs. Formally in SEO, if you were not ranking on page 1 of Google then you would not show up. Now, if you are not in the knowledge graph, you won’t show up. The way we search is changing and it is now about being the answer.
From the article "BrightonSEO: Are Assistant-powered devices like Alexa a dream or a nightmare?" by Alex Harber.