Vantage is awesome - I've talked with Ben (their CEO) a few times. There are a lot of tools that start from the cloud bills, and give you visibility of everything (Vantage, Cloudability, Cloud Health Tech, Flexera etc) - all of these tools are reactive in nature as they start from the cloud bills. Infracost sits where your code sits, and therefore it can be proactive; before anything is launched and costs money, it'll tell you how much it is going to cost. So if you have a budget of $1K, and you try to launch a 24xl instance, it'll tell you that you budget will be blown, before you've launched the resource. Making it all proactive.