More than two years ago, when we released Veeam Cloud Connect 9.0, I massively reworked my original paper on the topic, and the final result became a book available as a pdf. The book was also printed and I have some copies at home; not something to win any nobel price, but it's nice to see them there as remind me of the massive work it took. Then, the cloud was calling, and I decided it was time to make it more modern and after some re-editing and learning how markdown and github work, the book became an online resource that people can freely and easily read.