Data centers consume large amounts of electricity and produce significant carbon emissions. They are often inefficient, with only around 50% of energy going to IT loads while the rest is lost to physical infrastructure. This can be improved through better sizing, modular scalable designs, high-efficiency equipment, and optimization techniques like hot/cold aisle containment. Achieving higher data center infrastructure efficiency (DCiE) through monitoring and improvement strategies can reduce electricity bills by up to 50% and lower environmental impact.