The document discusses a modular cooling solution for data centers as an alternative to traditional CRAC-based cooling. It presents the modular cooling unit design, which uses refrigerant to transfer heat directly from server racks to the building's chilled water system. A case study shows the modular units reduced server temperatures by 14-24 degrees F in a lab without using air conditioning. The modular approach improves efficiency by up to 90%, utilizes space better, and provides a payback period of 3.3 years or less compared to traditional cooling systems.