Is stETH an ERC-20?

Is stETH categorized as an ERC-20 token? This question is central to understanding the nature and functionality of stETH within the crypto ecosystem. ERC-20 tokens are a standard protocol for fungible tokens on the Ethereum blockchain, allowing for interoperability and ease of integration across various decentralized applications. Given the importance of standardization in crypto, it's crucial to know if stETH adheres to the ERC-20 specifications. This knowledge affects how it can be used, traded, and integrated into smart contracts and DApps. Clarifying this point would greatly enhance my understanding of stETH's role in the broader crypto landscape.