Qualitative Interview Design is the latest research concept which is gaining weight, especially in the business world. Informal interviews are a concept of qualitative research. It accords the same opportunity to acquire information just like in any other research method. Its applicability comes even in business management. In normal business operations, the daily occurrences that characterize business operations entail gathering and collecting data. This data is usually relevant in determining the fate of a business in terms of market survey and related factors. Consequently, it is always important to have concise information on the targeted market on what needs to be done in order to succeed in a particular market. Such is a predicament that would warrant carrying out of the research. In view of this, informal interviews would provide a relatively easier way of evaluating the market before making any business decision. An in-depth interview entails asking questions, listening to the answers and recording them. The researcher can also pose additional questions to clarify or expand on particular issues. In most cases, the questions are open-ended and this is meant to explore the ideas of the respondents without restriction since this is likely to give a true picture and their real perceptions. This concept is aimed at understanding the clear view of the beneficiaries of a program, their judgment, and terminologies. The extent by which the three approaches in in-depth interviewing differ is basically dependent on standardization of the questions and how they are determined. These methods are the semi-structured interview, the informal conversational interview, and the standardized open-ended interview. Each of these approaches has different instrumentation requirements and preparation besides serving different purposes.Qualitative research design requires in-depth experience with methodology and one of its most important components is the concept of an informal interview. Qualitative Interview Design is one of the sources of research in academics where the interviews provide a wide information base pertaining to a participant’s first-hand experience and viewpoints on a specific topic of study. This research method concept makes the best literature review base since the qualitative interviews provide a novice investigation by expanding on each interview’s design practical component.Informal interviews present a rich source of data. This bears relevance since it entails interacting directly with the respondents. Consequently, it can be viewed as an unrivaled source of primary data. In business management, this would be helpful in deciding on any major business deal. Besides, interviews offer relatively fairways of establishing facts and sealing information gaps since the questions are always open-ended leading to unlimited and exhaustion of the ideas and perceptions of the respondents. When the respondents are not restricted to how to respond to questions, it will be easier to obtain none biased data which is very crucial in making relevant business decisions. Consequently, it is evident that business management benefits a great deal from informal interviews. Any form of research requires competence on the part of the research. This comes from the fact that the researcher would be compelled to relate the research to the objectives of carrying it out.