RTOS stands for Real-Time Operating System, a specialized software platform designed to manage hardware resources and run applications in devices that require precise timing and predictability. Unlike general-purpose operating systems, an RTOS ensures that tasks are executed within strict deadlines, making it essential for embedded systems, robotics, automotive controls, medical devices, and industrial automation. RTOS achieves this through efficient task scheduling, interrupt handling, and resource management, allowing multiple processes to run concurrently without missing critical timing constraints. Its deterministic behavior is crucial for applications where delays or unpredictability can lead to system failure or safety risks.