This solution brief outlines the process of operating expense (OpEx) planning using Anaplan, emphasizing the importance of meticulous budgeting and cost management to align with revenue projections. It describes how effective OpEx management is crucial for sustaining ongoing business operations, as these expenses often represent a significant portion of business costs. The document details various customizable methods for OpEx planning in Anaplan, including the use of historical growth rates and driver-based methodologies. It also highlights the flexibility in planning different operating expenses, such as travel and entertainment, research and development, and utilities. Furthermore, the brief presents the benefits of Anaplan for OpEx planning, including financial stability, effective resource allocation, improved performance evaluation, and enhanced cash flow management. A customer story illustrates the successful application of these principles at London Gatwick Airport, showcasing significant operational savings and improved forecasting accuracy.