The Giuoco Piano, also known as the Italian Game, is the oldest chess opening recorded in the history of chess. This opening is the origin of Ruy Lopez, which was refined with modern moves for long term initiative.
In this video, the instructor shows how white attacks the center and focuses on the weakened f7 square rather than developing the bishop to c5. After black reacts bishop to c5, you will see that the tension arises in the middle of the board. Basically, white has different options but the main objective is to take control at the center, which is the d5 spot, that's why defenders are added to the line.
The Giuoco Piano opening has been known as the play "according to your personal style", and it turns into anything but quiet after the initial development in the center. Certainly, there will be numerous exchanges in the center as both fight for control of the center control, opening up the board.
White and black will eventually take no flack from the outside, but everything runs through the center. For white to succeed, always remember that the ultimate goal or center control is to attack the vulnerable f7 square.
The video below will give you detailed explanations about the opening, multiple variations, and extended lines.