Factors that affect cost in Azure: resource type, consumption, region, bandwidth, reservations and Azure Hybrid Benefit

Azure bills most services by consumption, so the bill is the sum of many small meters rather than one fixed fee. Understanding what drives those meters is what lets you estimate cost before you deploy and control it afterwards. The exam expects you to name the main cost factors and explain how each one raises or lowers what you pay, and to recognize the purchase options that reduce cost for steady workloads.