The kernel handles all major system tasks and groups hardware features. This makes developing apps or programs within an operating system easier since the core functions are all in one location.

An operating system is a collection (or suite) of programs that manages and controls the computer. Operating systems have many functions: ...

I think the diagram is just trying to emphasize that operating system functions are usually invoked through a different mechanism then a simple library call.

Oracle has been subsuming operating system functions like memory and storage management for years; subsuming the whole operating system was just the next logical step.

A kernel can be defined as the essential center of an operating system. The kernel is the core of an operating system that provides a set of basic services for the other parts of the operating system.

Trusted operating systems seal up systems vulnerabilities like never before. But the complexity of the systems can lead even experienced administrators to create more problems than they solve. For ...

The operating system is open-source and developers outside the search giant could freely access its code, but until today, they couldn’t contribute their own to the project. That is now changing.