Every month you look at your AWS, Azure, or cloud provider bill. You pay it. Your devs tell you "that's how it works." Your vendors tell you "scaling costs." And the cycle repeats. But if you did a 4-hour audit of that bill, you'd find something uncomfortable: between 20% and 40% of what you pay is resources you don't need, instances no one turned off after a test, and architectures designed for a traffic spike that never came. Cloud overbilling isn't an accident. It's the cloud business model working exactly as it was designed: making itself invisible. The three leaks draining your budget 1. Idle resources — the silent leak Every company has staging, development, and testing environments. Most run 24/7. No one uses them at night. No one uses them on weekends. But the bill comes the same. A t3.medium EC2 instance used only 40 hours per week costs the same as one running 168 hours. You're paying for 128 hours per week of electricity no one consumes. Multiply by three environments. Multiply by twelve months.…