How does an OS Manage application?

An operating system (OS) manages applications by allocating system resources such as CPU time, memory, and input/output devices to ensure efficient operation. It provides a user interface for launching and interacting with applications, while also handling multitasking to allow multiple applications to run concurrently. The OS enforces security and stability by isolating applications from one another and managing their access to system resources. Additionally, it monitors application performance and can terminate or suspend processes as needed to maintain system integrity.