Ethereum Layer

Definition ∞ An Ethereum layer refers to a distinct component or network built upon or alongside the main Ethereum blockchain to enhance its capabilities. This typically differentiates between Layer 1, which is the foundational Ethereum blockchain itself, and Layer 2 solutions, which operate off-chain to process transactions more efficiently before settling them on Layer 1. Layer 2 technologies, such as rollups or sidechains, aim to improve scalability, reduce transaction costs, and increase transaction throughput without compromising the security or decentralization of the underlying Ethereum network. These layers are crucial for supporting the growing demand for decentralized applications and smart contract functionality. They represent a modular approach to blockchain architecture.
Context ∞ The development and adoption of various Ethereum layers are central to the ongoing efforts to scale the network and reduce gas fees, making dApps more accessible and affordable. Key discussions involve the security models of different Layer 2 solutions, their interoperability, and the user experience they provide. News frequently covers the launch of new Layer 2 networks, upgrades to existing ones, and the migration of decentralized applications to these more efficient environments. The success of these scaling solutions is paramount for Ethereum to maintain its position as a leading smart contract platform. The competition among Layer 2 protocols is a significant market trend.