How does the concept of microkernels differ from monolithic kernels in modern operating systems?

Operating systems are a fundamental component of computer science, serving as an interface between hardware and user applications. Traditionally, operating systems have been divided into two main types based on their kernel architecture: microkernels and monolithic kernels. Microkernels aim to minimize the core functionalities residing in the kernel space to enhance modularity and reliability, often relegating traditional kernel tasks to user space. In contrast, monolithic kernels incorporate most of the operating system services within the kernel, prioritizing performance and direct interaction with hardware. With the evolution of both hardware capabilities and software requirements, the debate between these two architectures remains active in the OS community. This raises intriguing questions about their respective roles and relevance in today's computing landscape, where issues of security, performance, and maintainability are ever-present.