Every layer you add brings you closer to the specific type of operating system and environment for your app. You can use every one of those layers as a building block to create new ones, right? So you can branch off at any time. It's a very flexible system that gives you total flexibility. The speed aspect is much faster because images are layered. Starting a container is like 10 times or maybe 100 times faster,. When you make things faster, usually it changes the experience.