ePUMA: Architecture Model Change

Mandatory

Greater stability and scalability for ePUMA

The ePUMA application's architectural model is evolving. Soon, B3’s Market Data real-time trading and monitoring platform will feature the CMR (Client Multirelay) architecture. The ePUMA client will be connected to a more robust, scalable and resilient structure, ensuring greater data transmission stability and quality.

This change also paves the way for future Market Data innovations, such as the ability to connect an MDRelay to multiple UMDFTCPs, further increasing the system's scalability.

Project Tags:

Trading

Listed

In Progress

Technology and operations

Product benefits

Stability

New architecture model will reduce disconnections and communication failures.

Scalability

Segregation of Market Data flows by segment ensures improved performance.

Enhanced experience

More fluid and reliable operation for ePUMA users.

Innovation

New ePuma architecture ready for innovation and expanded connections.

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ePUMA evolves with a modern, future-ready architecture.

Currently, the ePuma application connects to only one MDRelay, which communicates with Market Data through two sessions – one for each segment. With the new architecture, the application will be connected to a structure containing two dedicated MDRelay instances per segment, increasing processing capacity and reducing disconnections risk.

The CMR architecture implementation will take place between October and November 2025, and the schedule will be individually arranged with users.

ePUMA is B3's electronic trading platform with a trading screen that natively supports the PUMA Trading System interfaces (Market Data and Order Entry). It is an interface that market participants use to trade in different markets.

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