What does Byzantine Fault Tolerance (BFT) mean? – Libra Lexicon

Byzantine Fault Tolerance (BFT) is the ability of a decentralized system to provide safety guarantees in the presence of faulty, or “Byzantine” members.

Byzantine Fault Tolerant (BFT) consensus protocols are designed to function correctly even if some validator nodes — up to one-third of the network — are compromised or fail.