What is the use of stETH?

Ah, you've piqued my curiosity about stETH. Could you explain, what exactly is the purpose of stETH? I've heard it mentioned in some crypto circles, but I'm not entirely sure of its specific uses. Is it simply a token representing Ethereum staking, or does it have more intricate applications? Could you elaborate on how it fits into the broader crypto ecosystem? Also, how does it differ from traditional Ethereum holdings? I'm quite interested in understanding its unique features and benefits.