Layer-2 solutions, also known as off-chain scaling solutions, are techniques or protocols built on top of existing blockchain networks to enhance their scalability and efficiency. These solutions aim to alleviate congestion and high fees by processing transactions off the main blockchain while still maintaining the security and integrity of the underlying network. Layer-2 solutions can include payment channels, sidechains, state channels, or other methods that allow users to conduct faster and cheaper transactions without burdening the main blockchain with every single transaction. They help to address the scalability limitations of blockchain networks and improve user experience.
