Terra is a blockchain network designed to support algorithmic stablecoins pegged to various fiat currencies, enabling decentralized finance (DeFi) applications. Launched in 2018 by Terraform Labs, Terra gained prominence through its UST stablecoin and LUNA token, which were integral to its ecosystem. The protocol focuses on providing low-cost, fast transactions and price stability, though it faced significant challenges following the collapse of UST in 2022.