Ably

Ably is a real-time experience infrastructure platform delivered as a cloud API for building live, event-driven features into applications. It targets software engineering teams that need to add capabilities such as chat, live data feeds, notifications, collaborative editing, and multiplayer interactions without managing their own realtime messaging infrastructure. The platform provides pub/sub messaging over protocols like WebSockets, MQTT, and SSE, along with features like presence, history, and message ordering to ensure reliable delivery at scale. It operates a globally distributed edge network designed to guarantee low-latency delivery and high availability across regions. Ably also offers SDKs for multiple languages and frameworks, along with integrations into existing data pipelines and third-party services, allowing developers to embed realtime functionality into web, mobile, and IoT applications.