Sascha Siegl is a PreSales Consultant at SysEleven GmbH. Despite only having three years of professional experience, he has been involved with application development and management in containerized environments and system architecture planning in the cloud-native environment since his first day on the job. As an employee of ITDZ Berlin, he helped to introduce an OpenShift environment, and then, at the successor employer, Rhenus Office GmbH and, downstream, the start-up MIA GmbH, he created a concept for the introduction of the container orchestration tool Kubernetes, along with the necessary third-party systems for any pipelines, such as Gitlab, Ansible, and so on. The training and the regular exchange especially with application developers were a very good preparation for the technical customer support tasks. As a proponent of open source applications, he is also familiar with many different tools and approaches and brings the necessary all-round knowledge to customize best practices.