What system allows for centralized management of defense equipment across various services?

The Defense Integrated Priority List (DIPL) is the correct answer because it serves as a centralized mechanism for prioritizing defense equipment across different military services. The DIPL allows for systematic coordination and management of resources that ensures that the distribution of defense equipment aligns with strategic military priorities and requirements. This centralized approach enhances efficiency and effectiveness by enabling various branches to communicate and collaborate on their needs, allowing for a more organized allocation of resources.

The other choices, while related to equipment management and logistics in different ways, do not provide the same centralized prioritization and management capabilities as the DIPL. The Maintenance Management System (MMS) focuses primarily on the servicing and maintenance-related aspects of equipment rather than overall prioritization. The Joint Logistics Support System (JLSS) deals with logistics support but is more centered on execution rather than priority setting. The Integrated Resource System (IRS) pertains to resource management but does not specifically address cross-service equipment prioritization in the manner that DIPL does.