SDoT Security Gateway by Infodas ensures secured and controlled data exchange between different security domains. It allows bi-directional data exchange and filtering of structured and unstructured data objects. It is designed for high-speed, low latency data filtering of structured data objects and is accredited for German, EU, and NATO SECRET. It uses the L4Re microkernel operating system, which has proven security and separation mechanisms, avoiding vulnerabilities like buffer overflows, memory leaks, or deadlocks. The L4Re OS has only 15,000 lines of code, significantly fewer than standard operating systems. It supports application-independent data classification with tamper-proof and NATO STANAG 4774/8 compliant XML security labels. It enables digitization in sensitive areas by allowing controlled data exchange while protecting sensitive information.