Expert interviews are often used in market research to obtain information on the market, consumers, products and services. This is important for companies because it allows them to better understand the needs and expectations of consumers, the market and the business environment. Expert interviews are also widely used to gather information about a product or service in order to understand what its advantages and disadvantages are. To use expert interviewing effectively, it is important to select the right experts. Experts should be chosen carefully so that they have relevant knowledge and experience in the field. It is also important that the interview be conducted in an appropriate manner to ensure reliable information. Another important thing is to ensure security during the interview. Information security is very important to ensure the anonymity and protection of personal information of experts. It is also important that the interview is conducted at the highest ethical level to ensure its credibility. Expert interviewing is an effective method of gathering information from experts in a particular field and is widely used in market research. It is an important tool for understanding a problem and exploring solutions. To use expert interviewing effectively, it is important to select the right experts, conduct the interview in the right way, and ensure the security of the information. Ethics is also an important factor to ensure the credibility of the interview.