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Azure SignalR Service

Azure SignalR Service provides real-time messaging and WebSocket management for scalable web applications. · Azure · Messaging

Overview

Azure SignalR Service enables developers to add real-time messaging and WebSocket support to applications without managing servers or scaling infrastructure.

Good fit

Use when you need to add scalable real-time messaging or WebSocket support to web or mobile applications without managing infrastructure.

  • prototyping
  • student projects
  • small apps
  • learning

Not a fit

Avoid if you require high connection counts, strict SLAs, or advanced scaling, as the free tier is limited and lacks SLA guarantees.

  • high-scale production
  • strict SLA needs
  • large concurrent users
Quickstart · 5 steps
  1. Sign in to the Azure Portal.
  2. Create a new SignalR Service instance using the Free tier.
  3. Configure connection settings and access keys.
  4. Integrate the SignalR SDK into your application.
  5. Test real-time messaging between clients.

Other free messaging options

Brevo · Messaging
300 emails/day · Store up to 100,000 contacts · 2,000 unique contacts can enter active automations
Billing risk: None
No card
MailerLite · Messaging
250 subscribers · 2,500 emails/month · 2 user seats
Billing risk: None
No card
Mailjet · Messaging
200 emails/day · 6,000 emails/month · Basic analytics
Billing risk: None
No card
Postmark · Messaging
100 emails/month · No overages allowed
Billing risk: None
No card