The processor that runs a VM's workload (central processing unit); while B-series VMs run under their baseline, they accumulate CPU credits.
Also called central processing unit.
Read more: Microsoft Learn
In the Ultra Transcenders books
AZ-305AZ-104AZ-900AI-200DP-900DP-750AZ-400AZ-802DP-700MD-102DP-800
Each book explains CPU in context, with comparison tables and the common traps.
Terms in this definition
- Agents (classic) API
First-generation Foundry Agent Service API, based on threads, messages and runs. It is deprecated, replaced by conversations and responses, and retires on 31 March 2027.
- Workload
Also called an experience: a Fabric toolset aimed at one job role, e.g. Data Factory, Data Engineering, Data Warehouse, Real-Time Intelligence or Power BI. Each keeps its data in OneLake.
- B-series
Burstable VM family that accumulates CPU credits while running under its baseline and uses them up when it bursts above it.
- Virtual machines
Infrastructure-as-a-service compute giving complete control of the operating system, making it a fit for lift-and-shift moves and for software relying on OS-level pieces like COM.
- Baseline
A formally reviewed and approved specification that may afterwards be altered only under formal change control. The word also describes the architecture as it stands today.
Related terms
- Accelerated Networking
SR-IOV capability that cuts latency, jitter and CPU overhead for VM networking in Azure. HPC VM sizes with RDMA achieve even lower latency.
- Automatic scaling (App Service)
Rule-free scale-out choice for Premium v2 to v4 App Service plans that adds prewarmed instances according to HTTP traffic. Scaling on a CPU threshold is not possible with it.
- Compute cluster
Azure Machine Learning compute of several managed CPU or GPU nodes that scales from
min_instancestomax_instanceswith each job; set the minimum to 0 and an idle scale-down time so you pay only when jobs are running. - CPU capacity forecasting
A System Insights capability, included by default, that forecasts CPU usage based on locally collected performance data.
- D-series
Family of general-purpose VMs with a balanced ratio of CPU to memory, suited to web servers, enterprise applications and dev/test.
- DTU
Database Transaction Unit, a single figure combining CPU, memory and I/O, used by the DTU purchasing model for Azure SQL.
- EVC
vSphere cluster capability that exposes the same baseline CPU features on every host, allowing vMotion between different processor generations from the same vendor. A custom EVC mode can be applied to a cluster or to individual VMs.
- Host data
Monitoring data about the Hyper-V host side of a virtual machine, including CPU, disk and network metrics, the activity log and boot diagnostics, which is gathered automatically without any agent.