Basically, there are two types of meditations in Buddhism. That is, Samatha and Vidarshana meditations. Samatha meditation means the uplift of the concentration of a mind by suppressing the five defilements. Vidarshana meditation means the observation of the truth of the life by exploring it with a concentrated mind according to what Buddha taught. Some people think only either Vidarshana or Samatha meditation is enough to attain Nibbana, but the Exalted One taught us that both these meditations are necessary to achieve that goal. However, there can be differences how a person initiate the path to Nibbana with respect to these two types of meditations. A person can initiate the Middle Path just from either Samatha or Vidarshana, or from both. Though, we need to clarify that everyone needs to complete both Samatha and Vidarshana in realizing Nibbana at some point.