Operating systems are software that are used to manage the computer hardware and software resources. They also provide common services for computer programs. The operating system acts as an intermediary between programs and the computer hardware for hardware functions such as input and output, and memory allocation. They are found in many devices that contain a computer including cellular phones and video game consoles as well as web servers and supercomputers. There are numerous types of operating systems such as single-tasking system, multi-tasking operating system and distributed operating system. This book unfolds the innovative aspects of operating systems which will be crucial for the holistic understanding of the subject matter. Some of the diverse topics covered herein address the varied branches that fall under this category. This book is an essential guide for both academicians and those who wish to pursue this discipline further.