You cannot cut waste you cannot see. Many estates were built by hand, click by click, in a cloud console. That hides servers that are too big, doubled up or forgotten. Nobody can review what was never written down. So the waste stays, and keeps drawing power. Here is the fix you can use today. Describe your estate as infrastructure as code: one reviewed source of truth. Review it like application code. Look for idle, oversized and duplicated resources. Add policy checks that flag oversized or untagged resources before they deploy. GreenCode researchers found that infrastructure written as code is easier to check, shrink and rebuild. Write it down using tools like Terraform or OpenTofu, and check it with Checkov. Then estimate your cloud's energy and emissions, using tools like Cloud Carbon Footprint. GreenCode helps tackle this by mapping a running estate and rebuilding it as code. Then it shows which services use the energy, and which barely run. That was GreenCode Tech Tip number thirty-nine. Follow for the next tip, and find more on greencode.ai/tech-tips.