Industry 3.0 saw the introduction of computers in the industrialization process. This change introduced entirely new technology and thus was very disruptive to the manufacturing industry. Industry 4.0 seeks to improve the changes made in 3.0 by allowing computer to connect and communicate with one another.
Through this, computers are able to make decisions without any human involvement. Essentially, Industry 4.-0 creates a smart factory which can be more efficient and less wasteful. Companies that move towards Industry 4.0 must determine how to change their current workforce to suit their new needs. This could be by introducing new skills to current employees or by hiring new employees with the right skills.