Once we moved a database to cloud, because we were told it would be cheaper, since we would only pay for the space we actually used. It also meant that wheneve

Once we moved a database to cloud, because we were told it would be cheaper, since we would only pay for the space we actually used. It also meant that whenever the data size increased, however slightly, the invoice also increased, and managers started investigating whether this increase of data size was truly necessary. Sometimes even when then data size didn't change, managers kept asking whether it could be further decreased. Making the billing proportional to X means that X will become a political topic. Choose your X carefully!