Applications that require interactive, low‑latency communication—such as chat, live dashboards, notifications, or collaborative tools—often struggle with unreliable delivery, high latency, and complex scaling when built on traditional messaging stacks. Developers must manage infrastructure, handle reconnections, and ensure message ordering and durability themselves. Ably delivers a fully managed realtime platform that abstracts the underlying transport and scaling concerns.
Funding
$70M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.




Founders
Product
Problem
Applications that require interactive, low‑latency communication—such as chat, live dashboards, notifications, or collaborative tools—often struggle with unreliable delivery, high latency, and complex scaling when built on traditional messaging stacks. Developers must manage infrastructure, handle reconnections, and ensure message ordering and durability themselves.
Solution
Ably delivers a fully managed realtime platform that abstracts the underlying transport and scaling concerns. It provides a globally distributed WebSocket‑based network with sub‑10 ms latency and a 99.999 % uptime SLA, guaranteeing ordered, exactly‑once delivery and automatic connection recovery. Developers access the service through consistent SDKs for JavaScript, Java, Python, .NET, Swift, Flutter, and more, as well as pre‑built integrations for serverless functions, Kafka, Pulsar, and other event pipelines. The platform offers modular products—Pub/Sub, Chat, LiveObjects, LiveSync, Spaces, and AI Transport—so teams can compose the precise realtime experience they need without building custom infrastructure. Usage‑based pricing and tiered plans let organizations scale cost‑effectively from prototypes to enterprise‑grade workloads.
Target Audience
Product teams and developers building realtime experiences for web, mobile, or IoT—such as chat services, live dashboards, collaborative apps, fan‑engagement platforms, health‑tech, fintech, and ed‑tech solutions.
Features
- Global edge network with >700 PoPs delivering ~6.5 ms message latency worldwide.
- Message guarantees: ordered delivery, exactly‑once semantics, idempotent publishing, and automatic client‑side reconnection with state replay.
- Comprehensive SDKs (JavaScript, React, Python, Java, .NET, Swift, Kotlin, Flutter, etc.) providing idiomatic APIs across web, mobile, and IoT platforms.
- Pre‑built integrations for AWS Lambda, Azure Functions, Google Cloud Functions, Kafka, Pulsar, Kinesis, AMQP, SQS, Zapier, IFTTT, Terraform, and more.
- Advanced channel features: presence tracking, history, rewind, subscription filters, binary delta compression, and server‑side batching for bandwidth and cost optimization.
- Security and compliance: end‑to‑end AES‑256 encryption, HIPAA BAA, SOC 2, SSO/SCIM provisioning, custom CNAME, and token‑based authentication with granular permissions.
- Enterprise controls: dedicated clusters, 99.999 % SLA, real‑time observability via Datadog, control API for programmatic app management, and 24/7 premium support.