Founded in 2019, Optimism is an L2 blockchain built by Ethereum developers that processes its transactions in batches using optimistic rollups. Users gain access to cheap and near instantaneous transactions are cheap and nearly instantaneous.
Optimism is a Ethereum layer-2 (L2) solution that was built with the objective of being cheap and easy to use. It was first revealed back in June of 2019 and Optimism’s open mainnet was launched in December 2021. Another positive feature is that since Optimism was designed to closely mirror Ethereum blockchain, developers can deploy existing contracts on the blockchain in a very streamlined manner.