IBM MQ vs. PubNub

IBM MQ connects applications and microservices in private datacenters, across hybrid or multi-cloud environments, and at the edge of the enterprise. It allows businesses, from large enterprises to startups, to ensure every order, every payment, and every customer interaction counts. Messages between applications are delivered reliably once-and-only-once and applications are decoupled to enable rapid response to sudden traffic increases or system outages.

PubNub is a real-time platform for developers who build in-app chat and live features. The Chat SDK includes typing indicators, presence, message history, read receipts, reactions, and threads. PubNub supports unlimited subscribers per channel. PubNub assigns each message a server-side timetoken. Messages on a channel form one ordered sequence. End-to-end delivery latency is sub-100ms. DAZN uses PubNub to power chat and Watch Party experiences for 10 million users. PubNub charges by Monthly Active Users or transactions, depending on the plan.