Big Tech rejoiced over Biden's inauguration day promises on immigration and climate change - but Mark Zuckerberg and Elon Musk were notably silent

President Joe Biden waves after being sworn in during his inauguration on the West Front of the U.S. Capitol on January 20, 2021 in Washington, DC.Jonathan Ernst/Getty Images

• Joe Biden was sworn in as President of the United States on Wednesday.
• Big Tech leaders gave public statements congratulating Biden and Vice President Kamala Harris.
• They welcomed Biden's policies on climate change and immigration, in particular.

As Biden was sworn in as President of the United States, Big Tech rejoiced.

Major industry figures, including the CEOs of Apple and Google, congratulated the president, and many welcomed the slew of executive orders Biden started signing on Wednesday, which reversed various policies from former President Donald Trump.

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Tech leaders focused on Biden's promises to reform climate change and immigration policy, particularly his executive order protecting people brought to the US illegally as children, sometimes known as "dreamers" - although some major figures, including Facebook's CEO Mark Zuckerberg, stayed notably silent.