Organization official that's responsible for procurement, development, integration, modification, operation, maintenance, and disposal of an Information System. Response:

The Information System Owner is assigned the responsibility for the procurement, development, integration, modification, operation, maintenance, and disposal of an information system, making them accountable for its entire lifecycle.

An Authorizing Official grants authorization for a system to operate based on an acceptable risk level, but does not manage its day-to-day or lifecycle activities.

An Information Security Architect designs and implements security solutions for systems but does not hold overall responsibility for the system's operational lifecycle.

A Chief Information Officer typically manages the overall IT strategy and resources for an organization, not the specific lifecycle responsibilities for individual information systems.