Arbitrum
Arbitrum is a Layer 2 scaling solution for Ethereum that uses optimistic rollups to increase transaction throughput and reduce costs while maintaining Ethereum's security. It processes transactions off-chain and posts compressed data to Ethereum, enabling faster and cheaper decentralized applications (dApps) and smart contracts. Developed by Offchain Labs, it is one of the most widely adopted Ethereum scaling platforms.
Developers should learn Arbitrum to build scalable dApps on Ethereum without sacrificing security, as it reduces gas fees by up to 90% and increases transaction speeds significantly. It is ideal for DeFi protocols, NFT marketplaces, and gaming applications that require high throughput. Using Arbitrum allows developers to leverage Ethereum's ecosystem while overcoming its scalability limitations.