It is designed and manufactured by Ford Motor Company starting in 2019; the 8F35 is derived from the General Motors 9TXX family, which in turn was developed from an earlier GM 6T40 transmission.
Ford and GM announced a joint venture to share automatic transmission designs in April 2013: GM would adopt a 10-speed longitudinal transmission primarily designed by Ford, while Ford would adopt the GM 9T 9-speed transverse transmission.
[1] Ford declined to use the GM 9T, however, as the promised improvement in fuel consumption was less than expected, and removed one gear, resulting in the Ford 8F35.
The 8F24 is unique to Ford, while the 8F57 is derived from an earlier GM-Ford 6-speed automatic transmission.
[6] The change in ratio between the 2nd and 3rd gears is relatively small;[4] in later versions, the transmission is instructed to skip 2nd gear entirely to enhance throttle response.