How does the most important technology of our time - the Internet and WWW - work? The authors explain in simple language and in short the individual technical building blocks and organizational structures, behind the greatest innovation of our time. Only those who know how the technologies that determine our everyday lives can deal with them confidently and in souvereignity. Although digitalization is shaping our daily lives, the technologies behind the Internet and WWW remain obscure to most people. This book provides the key to understanding the huge developments of our time.