How does the concept of liquid incompressibility affect the behavior of fluids under pressure?

The concept of liquid incompressibility means that liquids cannot be easily compressed or squeezed into a smaller volume. This affects the behavior of fluids under pressure because when pressure is applied to a liquid, it does not compress much, causing the liquid to transmit the pressure evenly in all directions. This is why liquids are often used in hydraulic systems to transfer pressure and energy efficiently.