It reads your cost and usage report + AWS APIs and offers RI options for you to purchase or ignore.
What Eco is lacking is being a reseller like usage.ai and buying your unused RIs
We use cast.ai and it certainly has saved us a LOT of money. I unfortunately am not on the implementation / devops side of this, but it has been worth using, or can speak to exact figures, but it was definitely a significant difference in expenditures.
It reads your cost and usage report + AWS APIs and offers RI options for you to purchase or ignore. What Eco is lacking is being a reseller like usage.ai and buying your unused RIs