Ethereum total value staked

What is "Ethereum total value staked"?

The total amount of ETH currently held in the Ethereum staking deposit contract, expressed in ETH.

What is "Ethereum total value staked in USD"?

The total amount of ETH in the deposit contract expressed in US dollars.

Why are "Ethereum total value staked" and "Ethereum total value staked in USD" important?

The metric reflects the total amount of funds deposited to participate in proof-of-stake. An increase can indicate growth in the economic base securing consensus. The USD version enables assessment of the economic scale of staking over time.