Final answer:
The person who ensures that systems are developed on time, within budget, and with acceptable quality is the project manager.
Step-by-step explanation:
The person who ensures that systems are developed on time, within budget, and with acceptable quality is the project manager.
The project manager is responsible for planning, organizing, and controlling the resources and activities of a project to ensure its successful completion.
They work closely with the systems designer, systems builder, and systems owner to ensure that the project is progressing according to the established timeline, budget, and quality standards.
For example, in the development of a new software system, the project manager would collaborate with the systems designer to create a detailed project plan, coordinate with the systems builder to allocate resources and monitor progress, and communicate with the systems owner to ensure that the system meets their requirements and expectations.