Try to animate a camera which moves around an object in the scene. If you rely on keyframes only, you probably get a wobbly motion which makes the viewer seasick. With keyframes and a camera AIM things go smoothly.
For a more in-depth tutorial about 4 ways to animate a camera, see this tutorial:
https://youtu.be/Vx3Ht2M0WeA
Music: "Computer Animation" and "dubius 170" by Maximilian Schönherr, licensed via GEMA