I'm one of the founders of https://taloflow.ai (the company tied to the blog post above). We built Tim (taloflow infra monitor) to save endless hours going through spreadsheets or Cost Explorer. We built it as real-time dataflow with visualizations on Grafana so you can correlate events such as deployments to how your costs change. We also built a model that predicts your real-time costs inferred from infrastructure metrics that aren't available through Cost Explorer.

Our tool is free for any devs spending less than 60K a year on AWS. Let me know if you wanna test it out!