One of the most frequently posed Azure Databricks interview questions, be ready for it. A Databricks unit in Azure Databricks often referred to as DBU, is a computational unit measuring the processing capability and is billed per every second of use. Azure bills you for every virtual machine and other resources (e.g., blob, managed, disk storage that you provision in Azure clusters on the basis of Databricks units (DBUs). This unit indicates how much power your VM utilizes per second and helps Azure Databricks to bill you based on your usage. The Databricks unit consumption is directly linked to the type and size of the instance on which you run Databricks. Azure Databricks has different prices for workloads running in the Standard and Premium tiers.