listEfficiencyMetrics

Returns cost efficiency metrics aggregated over time and optionally grouped by a specified dimension. The metrics provide insights into your cost optimization progress by tracking estimated savings, spending, and measures how effectively you're optimizing your Cloud resources.

The operation supports both daily and monthly time granularities and allows grouping results by account ID, Amazon Web Services Region. Results are returned as time-series data, enabling you to analyze trends in your cost optimization performance over the specified time period.