Modern data centers looking to upgrade their cooling strategies today have a range of technology options at their disposal, which this roundtable will contextualize and examine. For example, an operator looking for incremental upgrades might decide to equip racks with rear door heat exchangers to increase thermal handling capabilities. Others on the climb up to ‘cloud net zero’ may choose more efficient and sustainable CO2 chillers for upgrades. Data centers facing imminent AI workloads may find a move to direct liquid cooling more suitable. Direct liquid-to-chip cooling with cold plates is now also an option that can be retrofit into existing data centers without affecting adjacent systems. Other facilities may choose to advance all the way to offering immersion cooling capabilities. The discussion will recognize how data center cooling upgrades can be accomplished in stages, as a process, depending on an individual data center's size and the size of its technology