I am new to Ubuntu. My goal is to be able to create and host a website from my own machine. I have some basic HTML/CSS/JS webpages that I am able to run with node.js, from within a vm, using Qemu, and I have been able to access the website from the internet. I want to try the 3-tier approach, having a web-server, app-server and db-server. For now, I am using my personal laptop to develop and host this and I want to run a VM for each server.