Stakeholder interviews play a crucial role in project planning as they gather insights directly from those who will be affected by the project. By engaging stakeholders, project managers can identify needs, expectations, and concerns, which are essential for shaping project goals and ensuring alignment with organizational objectives. These interviews also foster communication and collaboration, allowing for a clearer understanding of potential challenges and opportunities early in the project lifecycle. Ultimately, stakeholder interviews contribute to more informed decision-making and enhance the likelihood of project success.