Practical Byzantine Fault Tolerance is actually a consensus algorithm released within the late 90s by Barbara Liskov and Miguel Castro. pBFT was designed to work efficiently in asynchronous(no upper certain on when the reaction towards the request will be been given) methods. It is actually optimized for low overhead https://financefeeds.com/ethereum-maintains-dominance-but-lightchain-ai-dominates-presale-completion-with-bonus-round-now-live/