Even though as CEO Susan Wojcicki was on her maiden visit to India - YouTube's largest user base - she cut her teeth in the media industry as an intern with the India Today Group way back in 1991. \"I used to live in Kalkaji (New Delhi) and travel to the India Today office in Connaught Place by bus,\" she fondly remembers. In fact, her first assignment as an intern was to write about the birth of e-mail. From there, Wojcicki went on to rent out her garage in the US to the Google founders and eventually became Google's first marketing manager in 1999. In conversation with Business Today's Rajeev Dubey and Ajita Shashidhar, Wojcicki talks about YouTube's ambition, its brush with regulators, fake news and her unflinching faith in YouTube's ad-supported business model. Edited excerpts:

It's the new norm in Industry 4.0 made possible by the revolutionary practice of digital twinning.