The final diploma thesis is focused on logistics in procurement and inventory optimization, focusing on processes in warehouse logistics and inventory. It also points to logistics and its origin, division and its role in procurement. The work is divided into two parts, which are divided into chapters. The first part deals with theoretical knowledge of logistics, procurement, warehousing logistics and inventory, then focuses on methods of inventory optimization. The second part of the diploma thesis is an analysis of the issues in the company HERSTEK MILAN spol. s. r. o. in which we apply the acquired knowledge. The main goal of this work is to optimize the warehouse and select the appropriate amount of inventory to reduce finances in inventory storage. This section contains information about the company and the results of research of the chosen topic.