In this presentation, we will introduce the in-house IaaS platform “Flava Server.” While based on the open-source software OpenStack, Flava Server incorporates unique features tailored to our company’s environment and integrates with various internal systems. We will focus on the aspects that differ from the standard features. For example, we will explain specific enhancements not found in standard features, such as unique functionalities for cost reduction and the authentication processes using Athenz. Through these examples, we will introduce how Flava Server is integrated into our company’s environment.