Azure Web PubSub

name: Azure Web PubSub
description: Azure Web PubSub is a fully-managed service that enables building real-time, two-way messaging applications using
  publish-subscribe patterns over WebSockets. It supports broadcasting messages to clients in groups, sending messages to
  specific connections or users, and integrating with serverless event handlers for scalable real-time experiences.
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/web-pubsub/
tags:
- Messaging
- Pub-Sub
- Real-Time
- Serverless
- WebSockets
created: '2026-03-13'
modified: '2026-05-30'
url: https://azure.microsoft.com/en-us/services/web-pubsub/
specificationVersion: '0.18'
apis:
- name: Azure Web PubSub Client and Upstream Events
  description: AsyncAPI 2.6 description of the Azure Web PubSub client WebSocket subprotocols (json.webpubsub.azure.v1 and
    json.reliable.webpubsub.azure.v1) and the CloudEvents 1.0 HTTP upstream contract used by the service to deliver client
    events (connect, connected, disconnected, message, user custom events) to a configured backend webhook.
  image: https://azure.microsoft.com/svghandler/web-pubsub/
  humanURL: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-webpubsub-subprotocol
  baseURL: wss://{instance}.webpubsub.azure.com
  tags:
  - AsyncAPI
  - CloudEvents
  - Event-Driven
  - Pub-Sub
  - WebSockets
  properties:
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/microsoft-azure-web-pubsub/main/asyncapi/microsoft-azure-web-pubsub-asyncapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-webpubsub-subprotocol
  - type: Reference
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-json-reliable-webpubsub-subprotocol
  - type: Reference
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-cloud-events
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-tokens
- name: Azure Web PubSub Hubs REST API
  description: REST API for managing hub configurations within a Web PubSub instance. Hubs provide logical isolation for messaging
    and allow per-hub configuration of event handlers, anonymous connect policies, and authorization settings.
  image: https://azure.microsoft.com/svghandler/web-pubsub/
  humanURL: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub-hubs
  baseURL: https://management.azure.com
  tags:
  - Hubs
  - Resource Manager
  - Web PubSub
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub-hubs
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub-hubs?view=rest-webpubsub-2024-03-01
- name: Azure Web PubSub for Socket.IO REST API
  description: REST API for managing Azure Web PubSub for Socket.IO instances. Provides a fully managed Socket.IO server replacement
    that allows existing Socket.IO applications to scale to millions of connections without rewriting application code.
  image: https://azure.microsoft.com/svghandler/web-pubsub/
  humanURL: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-overview
  baseURL: https://management.azure.com
  tags:
  - Resource Manager
  - Socket.IO
  - Web PubSub
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-overview
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub?view=rest-webpubsub-2024-03-01
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/socketio-quickstart
- name: Azure Web PubSub Private Endpoint Connections REST API
  description: REST API for managing private endpoint connections to a Web PubSub service instance. Enables secure, private
    connectivity from virtual networks to Web PubSub through Azure Private Link without exposing traffic to the public internet.
  image: https://azure.microsoft.com/svghandler/web-pubsub/
  humanURL: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub-private-endpoint-connections
  baseURL: https://management.azure.com
  tags:
  - Networking
  - Private Endpoints
  - Resource Manager
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub-private-endpoint-connections
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub-private-endpoint-connections?view=rest-webpubsub-2024-03-01
- name: Azure Web PubSub Shared Private Link Resources REST API
  description: REST API for managing shared private link resources for a Web PubSub service. Enables outbound private connectivity
    from Web PubSub to other Azure resources such as Key Vault and Storage when configuring upstream event handlers.
  image: https://azure.microsoft.com/svghandler/web-pubsub/
  humanURL: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub-shared-private-link-resources
  baseURL: https://management.azure.com
  tags:
  - Networking
  - Private Link
  - Resource Manager
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub-shared-private-link-resources
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub-shared-private-link-resources?view=rest-webpubsub-2024-03-01
- aid: microsoft-azure-web-pubsub:microsoft-azure-web-pubsub-clienttoken-api
  name: Azure Web PubSub ClientToken API
  description: Generate JWT tokens for client connections
  humanURL: https://learn.microsoft.com/en-us/rest/api/webpubsub/dataplane
  baseURL: https://{instance}.webpubsub.azure.com
  tags:
  - ClientToken
  properties:
  - type: OpenAPI
    url: openapi/microsoft-azure-web-pubsub-clienttoken-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/dataplane
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/dataplane/web-pub-sub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-tokens
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/active-directory/develop/authentication-scenarios
- aid: microsoft-azure-web-pubsub:microsoft-azure-web-pubsub-hub-api
  name: Azure Web PubSub Hub API
  description: Send messages and manage connections, groups, and users in a hub
  humanURL: https://learn.microsoft.com/en-us/rest/api/webpubsub/dataplane
  baseURL: https://{instance}.webpubsub.azure.com
  tags:
  - Hub
  properties:
  - type: OpenAPI
    url: openapi/microsoft-azure-web-pubsub-hub-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/dataplane
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/dataplane/web-pub-sub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-tokens
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/active-directory/develop/authentication-scenarios
- aid: microsoft-azure-web-pubsub:microsoft-azure-web-pubsub-permission-api
  name: Azure Web PubSub Permission API
  description: Permission management for client connections
  humanURL: https://learn.microsoft.com/en-us/rest/api/webpubsub/dataplane
  baseURL: https://{instance}.webpubsub.azure.com
  tags:
  - Permission
  properties:
  - type: OpenAPI
    url: openapi/microsoft-azure-web-pubsub-permission-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/dataplane
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/dataplane/web-pub-sub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-tokens
  - type: Documentation
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub
  - type: Reference
    url: https://learn.microsoft.com/en-us/rest/api/webpubsub/web-pub-sub
  - type: Authentication
    url: https://learn.microsoft.com/en-us/azure/active-directory/develop/authentication-scenarios
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/azure-web-pubsub/overview
- type: AgenticAccess
  url: agentic-access/microsoft-azure-web-pubsub-agentic-access.yml
- type: DomainSecurity
  url: security/microsoft-azure-web-pubsub-domain-security.yml
- type: Authentication
  url: authentication/microsoft-azure-web-pubsub-authentication.yml
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-check-then-close-connection-workflow.yml
  name: Azure Web PubSub Check then Close Connection
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-direct-connection-message-workflow.yml
  name: Azure Web PubSub Direct Connection Message
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-grant-permission-and-send-to-user-workflow.yml
  name: Azure Web PubSub Grant Permission then Send to User
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-grant-permission-if-missing-workflow.yml
  name: Azure Web PubSub Grant Permission if Missing
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-group-broadcast-if-active-workflow.yml
  name: Azure Web PubSub Broadcast to Group if Active
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-group-warn-and-teardown-workflow.yml
  name: Azure Web PubSub Warn Group and Tear Down
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-join-group-and-send-workflow.yml
  name: Azure Web PubSub Join Group, Send, then Leave
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-notify-user-if-online-workflow.yml
  name: Azure Web PubSub Notify User if Online
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-provision-client-and-join-group-workflow.yml
  name: Azure Web PubSub Provision Client and Join Group
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-revoke-permission-and-evict-workflow.yml
  name: Azure Web PubSub Revoke Permission and Evict Connection
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-token-then-broadcast-workflow.yml
  name: Azure Web PubSub Generate Token then Broadcast
- type: Arazzo
  url: arazzo/microsoft-azure-web-pubsub-user-onboard-to-group-workflow.yml
  name: Azure Web PubSub Onboard User to Group
- type: Portal
  url: https://portal.azure.com/
- type: Website
  url: https://azure.microsoft.com/en-us/products/web-pubsub
- type: Documentation
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/
- type: GettingStarted
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/quickstart-serverless
- type: Authentication
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/howto-generate-client-tokens
- type: Pricing
  url: https://azure.microsoft.com/en-us/pricing/details/web-pubsub/
- type: ServiceLevelAgreement
  url: https://azure.microsoft.com/en-us/support/legal/sla/web-pubsub/
- type: StatusPage
  url: https://status.azure.com/
- type: Blog
  url: https://devblogs.microsoft.com/azure-sdk/
- type: Support
  url: https://azure.microsoft.com/en-us/support/options/
- type: TermsOfService
  url: https://azure.microsoft.com/en-us/support/legal/
- type: PrivacyPolicy
  url: https://privacy.microsoft.com/en-us/privacystatement
- type: Signup
  url: https://azure.microsoft.com/en-us/free
- type: Login
  url: https://portal.azure.com
- type: SDKs
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/reference-server-sdk-js
- type: SDK - JavaScript
  url: https://www.npmjs.com/package/@azure/web-pubsub
- type: SDK - Python
  url: https://pypi.org/project/azure-messaging-webpubsubservice/
- type: SDK - .NET
  url: https://www.nuget.org/packages/Azure.Messaging.WebPubSub
- type: SDK - Java
  url: https://learn.microsoft.com/en-us/java/api/overview/azure/messaging-webpubsub-readme
- type: SDK - Go
  url: https://pkg.go.dev/github.com/Azure/azure-sdk-for-go/sdk/messaging/azwebpubsub
- type: CLI Tools
  url: https://learn.microsoft.com/en-us/cli/azure/webpubsub
- type: ChangeLog
  url: https://azure.microsoft.com/en-us/updates/?product=web-pubsub
- type: GitHubOrganization
  url: https://github.com/Azure
- type: GitHub Samples
  url: https://github.com/Azure/azure-webpubsub
- type: StackOverflow
  url: https://stackoverflow.com/questions/tagged/azure-webpubsub
- type: Community
  url: https://learn.microsoft.com/en-us/answers/tags/371/azure-web-pubsub
- type: FAQ
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/resource-faq
- type: RateLimits
  url: https://learn.microsoft.com/en-us/azure/azure-web-pubsub/concept-billing-model
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com