Introduction

EMQX is an open-source (opens new window), highly scalable, and feature-rich MQTT broker designed for IoT and real-time messaging applications. It supports up to 100 million concurrent IoT device connections per cluster while maintaining a throughput of 1 million messages per second and a sub-millisecond latency.

EMQX supports various protocols, including MQTT (3.1, 3.1.1, and 5.0), HTTP, QUIC, and WebSocket. It also provides secure bi-directional communication with MQTT over TLS/SSL and various authentication mechanisms, ensuring reliable and efficient communication infrastructure for IoT devices and applications.

With a built-in powerful SQL-based rules engine (opens new window), EMQX can extract, filter, enrich, and transform IoT data in real-time. EMQX also ensures high availability and horizontal scalability with a masterless distributed architecture and provides an operations-friendly user experience with excellent observability.

EMQX has been adopted by over 20,000 enterprise users, connecting more than 100 million IoT devices. Over 400 customers, including renowned brands like HPE, VMware, Verifone, SAIC Volkswagen, and Ericsson, trust EMQX for their mission-critical IoT scenarios.

Key Benefits

Massive Scale (opens new window)

EMQX enables scaling up to 100 million concurrent MQTT connections in a single cluster, making it one of the most scalable MQTT brokers available.

High Performance

EMQX is capable of processing and handling millions of MQTT messages per second within a single broker.

Low Latency

EMQX offers almost real-time message delivery, with a sub-millisecond latency guarantee, ensuring that messages are received almost instantly.

Fully MQTT 5.0 (opens new window)

EMQX is fully compliant with both MQTT 5.0 and 3.x standards, providing better scalability, security, and reliability.

High Availability (opens new window)

EMQX enables high availability and horizontal scalability through a masterless distributed architecture, ensuring reliable and scalable performance.

Cloud-Native & K8s (opens new window)

EMQX can be easily deployed on-premises or in public clouds using Kubernetes Operator and Terraform.

Product Comparison

EMQ provides four deployment options for EMQX: two managed services (EMQX Cloud Serverless and EMQX Dedicated Cloud) and two self-hosted options (EMQX Open Source and EMQX Enterprise). To help you choose the best deployment option for your requirements, this page lists a comparison of feature support across different deployment types.

Features	MQTT as a Service		Self-Hosted
	EMQX Cloud Serverless	EMQX Dedicated Cloud	EMQX Open Source	EMQX Enterprise
	Get Free Serverless	14-Day Free Trial	Open Source Download	Get a Free Trial License
Scalability	1000 auto scale	1000 - unlimited	Up to 100M MQTT connections per cluster	Up to 100M MQTT connections per cluster
Throughput	1000 TPS	Unlimited	5M+ MQTT messages per second	5M+ MQTT messages per second
Reliability	Maintained by EMQX Cloud Team	Maintained by EMQX Cloud Team	Data storage in memory	Data persistence in RocksDB (Coming soon)
Latency	1~5 millisecond	1~5 millisecond	1~5 millisecond	1~5 millisecond
Integrations (Out-of-the-box)	Not supported.	Supports over 40 data integrations, including MQTT data bridge, Webhook, MySQL, PostgreSQL, Kafka, MongoDB, Oracle, etc.	Supports Webhook and MQTT data bridge.	Supports over 40 data integrations, including MQTT data bridge, Webhook, MySQL, PostgreSQL, Kafka, MongoDB, Oracle, etc.
MQTT 5.0 Broker
MQTT over QUIC
MQTT Add-ons
Multi-Protocol Gateways
Schema Registry
Message Codec
Rule Engine
File Transfer
Troubleshooting
Cloud-Native & K8s	N/A	N/A
Service Level Agreement (SLA)	99.9%	Up to 99.99%	N/A	N/A
License Model	SaaS - pay as you go	SaaS - hourly billing	Apache Version 2.0	Commercial license (Business source license)
Technical Support	8/5 Global support	24/7 Global support	Open source community	24/7 Global support