The document discusses creating a strong business case for developing a mobile application. It emphasizes the importance of determining development costs, operational costs, and calculating benefits, cost savings, and return on investment. For development costs, it highlights estimating costs for staffing, testing, and integration. Operational costs include promotion, licensing, infrastructure, cloud services, support/training, and updates. Calculating benefits could include improving customer loyalty, tapping new revenue streams, reaching key demographics, and enhancing customer service. The document provides guidance on estimating these various factors to build a comprehensive business case.