A stakeholder interview is a qualitative research method used in the process of testing business ideas to gather insights, perspectives, and requirements from individuals who have a vested interest or influence in the project or product being developed. These stakeholders can include customers, employees, investors, partners, and other relevant parties. The primary goal of these interviews is to understand the needs, expectations, and potential concerns of stakeholders to ensure that the business idea aligns with their interests and addresses any potential issues early in the development process. By engaging stakeholders through interviews, corporate or startup teams can validate assumptions, refine their ideas based on feedback, and increase the likelihood of successful implementation by ensuring that all critical viewpoints are considered.