As global warming becomes a more pressing issue, organizations are prioritizing energy-efficient and carbon-optimized computing due to the significant carbon footprint of cloud computing, which rivals that of the airline industry. The text outlines a multi-level approach to reducing carbon emissions in hybrid cloud environments, starting with data centers, where options include using green energy, optimizing cooling systems, and improving Power Usage Effectiveness (PUE). It then explores host and container optimization by right-sizing and consolidating resources, emphasizing the importance of understanding business contexts before making changes. Finally, it highlights "green coding" practices that enhance computational efficiency and reduce energy usage, such as optimizing inter-process communications and implementing caching layers. The Dynatrace Carbon Impact app is introduced as a tool offering detailed visibility into carbon emissions, providing actionable insights for optimizing hosts, containers, and application code without compromising performance or cost goals.