Ahead of the swearing-in ceremony, the Bidens greeted the Trumps on the North Portico of the White House.Joe Biden and Jill Biden welcomed Donald Trump and Melania Trump. Rod Lamkey, Jr./AP Former Vice President Kamala Harris and former second gentleman Doug Emhoff also greeted Vice President JD Vance and second lady Usha Vance.Kamala Harris and Doug Emhoff greeted JD Vance and Usha Vance. Alex Brandon/AP Attendees took their seats in the Capitol Rotunda, where the inauguration was held due to freezing temperatures.The Capitol Rotunda. ANDREW HARNIK/POOL/AFP via Getty Images Tech billionaires, including Mark Zuckerberg, Jeff Bezos, Sundar Pichai, and Elon Musk, were seated on the inaugural platform.Mark Zuckerberg, Lauren Sanchez, Jeff Bezos, Sundar Pichai, and Elon Musk at Donald Trump's inauguration. Julia Demaree Nikhinson - Pool/Getty Images Former Presidents Bill Clinton, George W. Bush, and Barack Obama took their seats in the Rotunda.Bill Clinton, Hillary Clinton, George Bush, Laura Bush, and Barack Obama at Donald Trump's inauguration. Chip Somodevilla/Getty Images Vice President JD Vance was the first to be sworn in.JD Vance. Saul Loeb/Pool photo via AP President Donald Trump took the oath of office at noon as per tradition.Donald Trump. Saul Loeb/Pool/AFP via Getty Images "The golden age of America begins right now," Trump said in his inaugural address, which included numerous policy proposals.Donald Trump's inaugural address. Kevin Lamarque - Pool/Getty Images After Trump's address, Carrie Underwood sang "America the Beautiful."Carrie Underwood. Chip Somodevilla/Getty Images The Bidens departed the Capitol on Marine One, completing the peaceful transfer of power.Marine One leaving the Capitol. ANDREW CABALLERO-REYNOLDS/AFP via Getty Images