FAST Protocol

FAST (Fix Adapted for Streaming) optimizes high-volume market data delivery through field encoding and sophisticated data compression.

Engineered by the FIX Trading Community, the FAST Protocol slashes bandwidth requirements for real-time financial feeds. It achieves significant throughput gains by using template-based compression and presence maps to eliminate redundant data fields. Exchanges like CME Group and Eurex rely on FAST to handle millions of messages per second with microsecond-level latency. By shifting the heavy lifting from the network to the endpoints, it ensures high-frequency price updates remain synchronized across global trading floors.

https://www.fixtrading.org/standards/fast-protocol/