Intention is the mental exertion of a Mind caused by an underlying wish, want, desire, purpose, goal or meaning being Will, or Volition that leads to further mental impulses and / or physical actions.
As Intent or Intention is caused by Volition, but is the source of any subsequent action or further mental impulse, intention can be viewed as the planning, calculating and higher cognitive phases of a thought leading to some outcome.
Intent or Intention is not equivalent to Motive or Motivation as motivation describes a philosophy assuming certain relationships between intention and behavior, whereas intent is therefore an input to the concept of motive.