The scope of activities associated with a system, encompassing the system's initiation, development and acquisition, implementation and maintenance, and ultimately its disposal that instigates…

An Information system is the object undergoing these activities, not the cycle of activities itself.

The System Development Life Cycle (SDLC) is a framework defining tasks performed at each step in an information system's life cycle. It includes phases such as initiation, development/acquisition, implementation, operations/maintenance, and disposal, making it a comprehensive process for managing system security and functionality throughout its existence.

The Authorization Process is a specific phase or set of activities within the SDLC, focused on formally authorizing a system to operate, not the entire life cycle.

IT infrastructure refers to the foundational components and resources (hardware, software, network) of an organization's IT environment, not the systematic process of managing a system's life.