Basically all modern automatic transmissions are electronically controlled transmissions/transaxles… The main difference is a not ECT trans uses mechanical controls, meaning hydraulic governors, spool valves, TV cable inputs and or vacuum modulators, where as an ECT trans will use electronic inputs from multiple engine and trans sensors that the TCM (trans computer module) and the ECM monitor and send signals to different solenoids to control up/down shifts and torque converter lock up…
That is about as basic as I can put it, but both are very complex…