Cloud computing can both increase and reduce environmental impact, but in many cases it helps lower energy use through better efficiency and shared infrastructure. Large cloud providers run highly optimized data centers that use advanced cooling, automation, and increasingly renewable energy to reduce carbon emissions, while also improving resource utilization by scaling workloads only when needed. Compared to traditional on-premises setups, this often reduces idle hardware and overall power consumption. However, challenges still exist, such as high energy demand from large data centers and growing compute usage. Organizations can improve sustainability by right-sizing resources, using auto-scaling, shutting down unused workloads, and choosing energy-efficient architectures, which helps minimize environmental footprint while maintaining performance.