Renewable energy is the energy obtained from the natural resources that freshen itself through a period of time without impoverishing Earth’s resources. But in today’s era, wind-based energy plays a vital role. In the past years, well foundation and pile foundation have come into the picture, but now it is being replaced by monopile as erosion will not be an issue with this kind of foundation. The maintenance cost and installation time taken by this foundation is less. This foundation comprises a steel pipe of diameter between 3.5 m and 7 m and the pile is driven 10m to 20m into the seabed. Regarding the design, if a monopile rotates in consequence of lateral loading, it also translates vertically against the soil in front of the pile by causing additional shear components. However, the lateral displacement and rotation at the base of the pile create additional lateral shear and moment resistance. The major focus is on accumulated deflection and rotation at the base level, which is, until now, challenging for a simple design approach. Various tests have been implemented to measure the monopile—soil stiffness under different loading conditions. From these tests, it is observed that stiffer soils show fewer variations with respect to change in the pile penetration depth in the range 5–7 D. Besides this, the main motive of this paper is to provide an overview of different lab and field tests conducted to find out the stiffness of soil-monopile under uni-directional and multi-directional loading conditions.