How do microkernels differ from monolithic kernels in terms of system stability and security in operating systems?

Operating systems rely heavily on their kernel architecture to manage hardware resources and ensure system operations. Two predominant kernel designs are microkernels and monolithic kernels, each with its distinct approach to system tasks. Monolithic kernels consolidate core functions like device drivers and file system management within a single large process running in a unified memory space, which can lead to efficiency but may also increase vulnerability to system crashes from bugs. Conversely, microkernels adopt a minimalistic approach, delegating most services to user space. This separation potentially enhances security by isolating services and thus limiting the impact of faults. However, inter-process communication can add complexity and overhead. Understanding these architectural differences is crucial for appreciating their impact on the robustness and safety of an operating system.