Azure Load Balancer

name: Azure Load Balancer
description: Azure Load Balancer is a high-performance, low-latency layer-4 load balancing service for distributing inbound
  and outbound network traffic across virtual machines and other Azure resources. It supports public and internal load balancers,
  health probes, NAT rules, and HA scenarios.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://azure.microsoft.com/svghandler/load-balancer/
url: https://azure.microsoft.com/en-us/services/load-balancer/
created: '2026-03-13'
modified: '2026-05-19'
specificationVersion: '0.18'
tags:
- Azure
- High Availability
- Layer 4
- Load Balancing
- Network
apis:
- aid: microsoft-azure-load-balancer:microsoft-azure-load-balancer-load-balancers-api
  name: Azure Load Balancer Load Balancers API
  description: Load Balancers operations
  humanURL: https://learn.microsoft.com/en-us/rest/api/load-balancer/
  baseURL: https://management.azure.com
  tags:
  - Load Balancers
  properties:
  - type: OpenAPI
    url: openapi/microsoft-azure-load-balancer-load-balancers-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/load-balancer/
  - type: APIReference
    url: https://learn.microsoft.com/en-us/rest/api/load-balancer/
  - type: Authentication
    url: https://learn.microsoft.com/en-us/rest/api/azure/
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/azure/load-balancer/quickstart-load-balancer-standard-public-portal
  - type: Pricing
    url: https://azure.microsoft.com/en-us/pricing/details/load-balancer/
  - type: SDKs
    url: https://learn.microsoft.com/en-us/python/api/overview/azure/network
  - type: SDKs
    url: https://learn.microsoft.com/en-us/dotnet/api/overview/azure/resourcemanager.network-readme
- aid: microsoft-azure-load-balancer:microsoft-azure-load-balancer-operations-api
  name: Azure Load Balancer Operations API
  description: Operations operations
  humanURL: https://learn.microsoft.com/en-us/rest/api/load-balancer/
  baseURL: https://management.azure.com
  tags:
  - Operations
  properties:
  - type: OpenAPI
    url: openapi/microsoft-azure-load-balancer-operations-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/load-balancer/
  - type: APIReference
    url: https://learn.microsoft.com/en-us/rest/api/load-balancer/
  - type: Authentication
    url: https://learn.microsoft.com/en-us/rest/api/azure/
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/azure/load-balancer/quickstart-load-balancer-standard-public-portal
  - type: Pricing
    url: https://azure.microsoft.com/en-us/pricing/details/load-balancer/
  - type: SDKs
    url: https://learn.microsoft.com/en-us/python/api/overview/azure/network
  - type: SDKs
    url: https://learn.microsoft.com/en-us/dotnet/api/overview/azure/resourcemanager.network-readme
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
common:
- type: AgenticAccess
  url: agentic-access/microsoft-azure-load-balancer-agentic-access.yml
- type: DomainSecurity
  url: security/microsoft-azure-load-balancer-domain-security.yml
- type: Authentication
  url: authentication/microsoft-azure-load-balancer-authentication.yml
- type: OAuthScopes
  url: scopes/microsoft-azure-load-balancer-scopes.yml
- type: GitHubOrganization
  url: https://github.com/Azure
- type: Portal
  url: https://portal.azure.com/
- type: Documentation
  url: https://learn.microsoft.com/en-us/azure/load-balancer/
- type: Pricing
  url: https://azure.microsoft.com/en-us/pricing/details/load-balancer/
- type: StatusPage
  url: https://status.azure.com/
- type: Blog
  url: https://azure.microsoft.com/en-us/blog/
- type: Support
  url: https://azure.microsoft.com/en-us/support/
- type: TermsOfService
  url: https://azure.microsoft.com/en-us/support/legal/
- type: PrivacyPolicy
  url: https://privacy.microsoft.com/en-us/privacystatement
- type: Features
  data:
  - name: Layer-4 Load Balancing
    description: Distribute TCP and UDP traffic across virtual machines and resources with high performance and low latency.
  - name: Public and Internal Load Balancers
    description: Support both public-facing and internal load balancing scenarios for diverse network architectures.
  - name: Health Probes
    description: Monitor backend instance health with configurable TCP, HTTP, and HTTPS probes for automatic failover.
  - name: NAT Rules
    description: Configure inbound NAT rules to forward traffic to specific backend instances on designated ports.
  - name: High Availability Ports
    description: Load balance all TCP and UDP flows on all ports simultaneously for network virtual appliance scenarios.
  - name: Cross-Region Load Balancing
    description: Distribute traffic across Azure regions for global high availability and disaster recovery.
- type: UseCases
  data:
  - name: Web Application High Availability
    description: Distribute traffic across multiple web servers for improved reliability and uptime.
  - name: VM Scale Set Load Balancing
    description: Automatically balance traffic across virtual machine scale sets with auto-scaling capabilities.
  - name: Network Virtual Appliance Distribution
    description: Distribute traffic across multiple firewall or NVA instances using HA ports.
- type: Integrations
  data:
  - name: Azure Virtual Machines
    description: Distribute network traffic across pools of Azure virtual machines.
  - name: Azure Virtual Machine Scale Sets
    description: Integrate with VMSS for automatic scaling and load distribution.
  - name: Azure Monitor
    description: Monitor load balancer health, performance metrics, and diagnostic logs.
- type: LlmsText
  url: https://portal.azure.com/llms.txt