LynxOS is a real-time operating system (RTOS) that is used in embedded systems, particularly in safety-critical and high availability applications. It is designed to provide high levels of reliability, security, and performance in environments where failure is not an option. LynxOS supports multiple processor architectures and is POSIX-compliant, making it a popular choice in industries such as aerospace, defense, and telecommunications. Knowing how to work with LynxOS is considered a specialized skill that may be required for certain job positions.