What is EMQX Enterprise?
EMQX Enterprise is a scalable, distributed MQTT broker built for IoT, Industrial IoT (IIoT), connected vehicles, and AI agent communication. It delivers real-time pub/sub messaging at massive scale, supporting millions of concurrent connections per cluster, sub-millisecond message fan-out, durable message queues with replay, and native integrations with databases, data warehouses, and cloud services such as Snowflake, Google BigQuery, Amazon Redshift, and Amazon S3 Tables.
Starting with version 5.9, EMQX unified the previous Open Source and Enterprise editions into a single platform under the Business Source License (BSL) 1.1. All advanced features — including multi-tenancy, fine-grained security (SSO, RBAC, audit logs), geo-replication, session persistence, file transfer, message codec and validation, and 40+ native data integrations — are now available in one product. Under the BSL Additional Use Grant, EMQX remains free for non-production environments, testing, and single-node production deployments, with paid licenses and commercial support for larger production clusters; educational institutions and non-profits can request a free license key.