Ably Realtime Platform

Ably is a realtime data delivery platform that provides pub-sub messaging, live chat infrastructure, collaborative state synchronization, and AI agent transport over a globally distributed edge network designed for low-latency message delivery at internet scale. The platform delivers messages with a median latency of 6.5 milliseconds across a network spanning over seven hundred points of presence and eleven globally distributed regions, sustaining over thirty billion connections monthly and two trillion API operations while maintaining one hundred percent uptime over seven consecutive years. Pub/Sub provides flexible APIs with message ordering guarantees, at-least-once delivery, and delta compression, supporting WebSocket and Server-Sent Events protocols with automatic reconnection and connection state recovery. Chat offers pre-built APIs optimized for massive user loads, handling typing indicators, presence detection, message reactions, read receipts, and message history without backend infrastructure. AI Transport keeps agentic AI sessions continuous by streaming model responses, tool call results, and reasoning steps in realtime, with backpressure handling and session resumption after disconnections. LiveObjects provides realtime state synchronization across users and devices, enabling collaborative cursors, shared whiteboards, and multiplayer document editing. Spaces creates collaborative environments with shared presence, cursor tracking, and component-level state. SDKs are available for JavaScript, React, Python, Java, .NET, Ruby, Flutter, Swift, PHP, and Go, with pre-built integrations for AWS Lambda, Cloudflare Workers, Kafka, and Zapier. Enterprise features include HIPAA BAA, SOC 2 Type II compliance, dedicated clusters, and uptime SLAs.