WebSockets

WebSockets are the right choice for bidirectional real-time communication. Market data feeds, collaborative editing, live dashboards — anywhere the server needs to push data to the client without polling.

Server-Sent Events (SSE) cover simpler cases where data flows one direction, but WebSockets remain the standard for interactive real-time applications. We've used them extensively in financial trading platforms where latency matters and the connection needs to carry both market data and user actions.