Diagnostic Analysis involves the detailed examination of a business process, system, or activity to identify weaknesses and inefficiencies. It typically focuses on one particular area, across different departments or within one department. Usually, it is performed to correct an existing problem or develop an innovative solution. The process starts with a thorough analysis of data from multiple sources, such as past performance, customer feedback and market research. From this data, trends can be identified and potential problems uncovered. Through the process of diagnosing business issues, new strategies can be developed and implemented for better performance.