Low Extra Delay Background Transport (LEDBAT) is a way to transfer data on the Internet quickly without clogging the network.[1] LEDBAT was invented by Stanislav Shalunov[2][3] and is used by Apple for software updates, by BitTorrent for most of its transfers[4] and by Microsoft SCCM software distribution points.[5] At one point in time, LEDBAT was estimated to carry 13–20% of Internet traffic.[4]