As energy costs rise and concerns about environment increases, developers are beginning to realize that optimizing for performance isn't enough — it's time to optimize for sustainability. Most of the small, distributed devices running inefficient software can collectively waste significant power and increase the global carbon footprint. While performance profiling has always been the primary concern for developers, energy profiling has often been overlooked, especially across the diverse layers of the IoT ecosystem. Yet, when developers try to measure this energy impact, they quickly hit a wall: there simply aren't enough profiling tools that work across all layers of IoT architecture — from device firmware to cloud applications.