I've been working with AE a lot over the last couple of months and I can't find any tutorials on achieving this type of animation . I tried experimenting for a bit by trying to mimic the background color transitions, but it just doesn't seem fluid and smooth like in the video(even with easing on my keyframes). I tried motion blur as well, but since the animation is so fast they look like gradients, taking away from the very flat minimalistic look. If anyone could guide me in the right direction that would be greatly appreciated.
And to add to that;
to get better control over your keyframes, use the graph view and play around in there. You can adjust how smooth the keyframes act, and get a very precise control over the speed. Make sure to learn the difference between the value-graph and the speed-graph.