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Lean Inventory Management is a systematic approach that focuses on reducing waste in the inventory management process to improve operational efficiency and reduce costs. This study aims to analyze the impact of Lean Inventory Management implementation on reducing inventory costs in manufacturing companies. This research uses a case study method in a manufacturing company that has implemented Lean Inventory Management. Data were collected through in-depth interviews, direct observation, and analysis of company documents. The analysis techniques used include descriptive and comparative analysis to measure changes in inventory costs before and after implementation. The results showed that the implementation of Lean Inventory Management succeeded in significantly reducing inventory costs. Some of the strategies implemented include the implementation of Just-In-Time (JIT), reduction of buffer inventory levels, improved coordination with suppliers, and the use of information technology for real-time inventory monitoring. In addition, the company also noted improved operational efficiency and customer satisfaction as a positive impact of implementing Lean Inventory Management. This study concludes that Lean Inventory Management is an effective approach to reduce inventory costs in manufacturing companies. Proper implementation of lean strategies can result in significant cost savings

In this era, technology is developing very rapidly in various sectors ranging from industry, health, education, retail, and various other sectors. The development of technology is linear with human needs that must be met quickly, easily, and practically. A sector that can fulfill human needs is the trade sector. Currently, the trade sector is one of the sectors that is highly developed along with the trend of online shopping. Although online shopping is currently very popular, it does not mean that offline shopping is necessarily abandoned. Conventional payment systems usually require customers to queue at the cashier to make payments after choosing grocery items. Therefore, there is a need for technological innovation that can overcome this. The solution to overcome these problems is by planning to create a Smart Shopping Scanner machine by considering lean project management. Based on the results of the research that has been done, the application of the Lean Project Management method to the Smart Shopping Scanner project planning at PT ABC has resulted in significant improvements. Reduction of project completion time by 33.33%, reduction of component inventory value by 40%, and improvement of team communication by 66.67% show the effectiveness of this method in overcoming waste and increasing efficiency.