I want to monitor and understand my data transfer costs. Where should I start? Why are backups eating my database budget? One more storage class on S3? Following so-called “best practices” only works when you fully understand the implications, costs included. We will discuss how to monitor costs, address a few cloud anti-patterns, how to make the bill smaller and the deployment better. We will see which tools can help us reduce cloud usage costs and impact measuring cloud carbon emissions.