Introduction

In the previous module we discovered that there is free software, of professional quality, that you can use without paying huge licence fees. Now comes the logical question: fine, but that software... where does it live? Where is it installed? Who looks after it? And above all: how much does it cost to keep it running?

If you have ever had a computer in the back room running your invoicing program, you know exactly what we mean. That computer nobody dared touch "just in case", and which, the day it broke down, turned into a disaster. The cloud is the evolution of that computer. But to understand it, we need to start from scratch.