Why are we using the word Cloud when it comes to the modern IT delivery model? Well, there are several theories around that, but the most commonly accepted one is that in the past (and, by the way, still at present) people have used a cloud icon to illustrate a network on their diagrams in a transparent way. So, it has become a symbol of something that someone else needs to take care of – we are just using it and we know it is there. I like this concept best, because this is exactly what the Cloud conveys as a message. There is a lot more to that, actually, but I will come to that later. In the IT industry, this word has been used exactly with the message “Leave it to us”. Since Amazon Web Service, Microsoft Azure and Google Cloud are very aggressive and recognizable, most people think, that when you say Cloud you mean Public Cloud. That is far from the truth, and we can see a lot of IT companies using Cloud in the meaning of “You use it, we take care of it”.