Ease In

Starts fast and decelerates to a soft stop; the object arrives already moving and settles gently, opposite of Ease In.

This is for a motion graphics video. Animate the move in [scene] with an "Ease Out" (also called slow out, or decelerating): it starts at full speed and slows down steadily into a soft stop.
Do not soften the start — the object should already be moving when it appears, unlike an ease in-out, which also builds up speed gently.
Fit the move into [duration]; it suits an element entering the frame and settling into place.

Slow start, fast middle, slow stop; differs from Ease Out by also accelerating gently at the start.

This is for a motion graphics video. Animate the move in [scene] with an "Ease In-Out" (also called easy ease, or slow in and slow out): it starts slowly, is fastest through the middle, and slows to a soft stop.
Both ends should be gentle — unlike an ease out, which starts at full speed and only softens the stop.
Fit the move into [duration], and pick a stronger curve if the middle should feel like a quick snap between two rests.

Not a single look but the idea that speed changes over a move; compare with Linear to see eased motion feel natural instead of mechanical.

This is for a motion graphics video. Give every move in [scene] "Easing" (also called a timing curve or speed curve): let the speed change over the course of each move instead of staying constant.
Constant-speed (linear) motion looks mechanical; eased motion gathers speed and slows down the way real things do — ease out for things arriving, ease in for things leaving, ease in-out for moves that stay on screen.
Keep each move within [duration], and use the same family of curves throughout so the piece feels consistent.