Products flow in and out of different warehouses all over the world every day all the time, while the technology is improving, warehouses remain as they are unless major developments occur in the industry which require the modern warehouses to follow. Major changes in warehouses cost a fortune for the companies which require the owners to find changes that cost as little as possible while resulting in as high efficiency in the warehouse as possible. The purpose of this project is to find ways to optimize the current logic in the Warehouse Management System named Warehouse Administration Service System or WASS. By analyzing the WASS-systems database, reading the WASS-manual, creating tools to visualize the warehouse both theoretically and practically, interviewing workers, then shortcomings and optimizations can be found. The resultis that the current logic in the warehouse is very unoptimized by analysing the warehouse with the help of visualizing the warehouse and feedback from an interview. Improvements are suggested from analysing the heatmap and through visualizing the issues the improvements can be implemented. By creating a visualization of the optimal structure which can be used as areference for implementing a better structure in the actual production. The visualization tool and the heatmaps can help future warehouses that log goods inwards and outwards find shortcomings in their A,B,C-structure and improve their warehouse logic.