The phrase "obvious need" refers to a requirement that is evident or clear, and which is deemed necessary by most people. It describes something that is self-evident and does not require further explanation or justification because it is so obvious that it needs to be addressed. The term can be used in various contexts such as business, where an "obvious need" may refer to a product or service that customers are demanding, or in personal situations where there is a clear requirement for something to be done.