Where does Industry 4.0 fit in?

We are currently in the midst of the fourth industrial revolution, with three industrial revolutions behind us. The fourth industrial revolution builds upon the revolutions before it.

Industrial Revolution Through the Ages
Industry 1.0
End of the 1700s
Introduced mechanical manufacturing production using steam-powered and hydroelectric equipment.

Industry 2.0
Start of the 20th Century
Introduced mass production via electricity and use of assembly lines.

Industry 3.0
Late 1960s and Early 1970s
Introduced production automation using electronics.

Industry 4.0
Today
Introduction of networking and exchange of information between machines and people.