His inauguration ceremony was attended by many notable figures, including former presidents and CEOs of major corporations like Elon Musk, Sundar Pichai, Jeff Bezos and Mark Zuckerberg, among others.

The swearing-in ceremony in Washington, moved indoors due to glacial temperatures, is being attended by former presidents, foreign dignitaries, tech and business executives, and an assortment of performers and celebrities.

Some of the most exclusive seats at President Donald Trump’s inauguration were reserved for powerful tech CEOs who also are among the world’s richest men.