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8. Glossary

Brandon McMillan edited this page Mar 27, 2026 · 2 revisions

AVD Glossary

Quick reference for Azure Virtual Desktop terms and acronyms.


Core Concepts

AVD (Azure Virtual Desktop) - Microsoft's desktop and app virtualization service running on Azure. Formerly Windows Virtual Desktop (WVD).

Host Pool - Collection of session hosts with identical configurations. Core AVD resource that users connect to.

Session Host - Virtual machine running Windows that hosts user sessions.

Application Group - Groups published applications or desktops. Users are assigned to app groups to access resources.

Workspace - Groups application groups for users. Provides organizational structure in the AVD feed.

Feed - List of available desktops and applications displayed to users in AVD clients.


Host Pool Types

Personal Host Pool - Each user gets a dedicated session host. Same VM every time.

Pooled Host Pool - Users share session hosts. Most cost-effective for similar workloads.

Multi-Session - Windows 10/11 Enterprise multi-session allows multiple concurrent users on one VM. Unique to AVD.


Load Balancing

Breadth-First - Distributes sessions evenly across all hosts before adding second sessions.

Depth-First - Fills one host to capacity before using the next. Better for cost optimization.

Drain Mode - Prevents new connections while allowing existing sessions to continue. Used during maintenance.


Identity & Access

Azure AD / Microsoft Entra ID - Cloud identity service required for AVD authentication.

Hybrid Azure AD Join - VMs joined to both on-premises AD and Azure AD.

Conditional Access - Enforces policies based on location, device, risk level before granting AVD access.

MFA (Multi-Factor Authentication) - Recommended security measure for all AVD users.

RBAC (Role-Based Access Control) - Azure permissions system for managing AVD access.

SSO (Single Sign-On) - Access AVD without re-entering credentials.


Profile Management

FSLogix - Stores user profiles in VHD/VHDX files on network shares. Enables profile roaming.

Profile Container - FSLogix VHD/VHDX file containing entire user profile.

VHD / VHDX - Virtual hard disk file formats for profiles and app attach.


Applications

RemoteApp - Published application that appears as a local app on user's device.

App Attach / MSIX App Attach - Dynamically attaches MSIX packages without installing on session host.

MSIX - Modern Windows app packaging format required for app attach.

CIM (Composite Image Format) - Modern disk format for MSIX app attach.


Infrastructure

ARM (Azure Resource Manager) - Azure's deployment and management service.

Bicep - Domain-specific language for deploying Azure resources. Simpler than ARM templates.

Terraform - Infrastructure as Code tool. Alternative to Bicep.

IaC (Infrastructure as Code) - Managing infrastructure through code files rather than manual configuration.

VNet (Virtual Network) - Azure networking construct. Session hosts typically deployed here.

NSG (Network Security Group) - Azure firewall controlling network traffic to resources.


Monitoring & Operations

Autoscale - Automatically starts/stops session hosts based on schedules and demand.

Scaling Plan - Configuration defining when to start/stop hosts.

KQL (Kusto Query Language) - Query language for analyzing AVD logs in Azure Monitor.

Diagnostics - AVD logging integrated with Azure Monitor.

Validation Environment - Host pool for testing updates before production.


Networking

RDP (Remote Desktop Protocol) - Microsoft protocol for remote connections.

Reverse Connect - Session hosts initiate outbound connections. No inbound firewall rules needed.

Gateway - Provides secure external connectivity and encryption.

Private Endpoint - Connects resources privately without public internet.


Common Abbreviations

Acronym Full Name
ANF Azure NetApp Files
ARM Azure Resource Manager
AVD Azure Virtual Desktop
FSLogix Profile management solution
IaC Infrastructure as Code
KQL Kusto Query Language
MFA Multi-Factor Authentication
MSIX Modern app packaging format
NSG Network Security Group
RBAC Role-Based Access Control
RDP Remote Desktop Protocol
SSO Single Sign-On
VDA Virtual Desktop Access
VDI Virtual Desktop Infrastructure
VM Virtual Machine
VNet Virtual Network
WVD Windows Virtual Desktop (legacy)

Related: Official Terminology | AVD FAQ | Getting Started

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