LSEG Leverages Rapid Addition Technology to Modernise Global Trading Connectivity on Azure

London Stock Exchange Group (LSEG) has completed a landmark migration of its Autex Trade Route (ATR) platform to Microsoft Azure, powered by Rapid Addition’s electronic trading technology. Together, the three organisations have reimagined one of the world’s largest FIX connectivity networks to deliver resilience, scale and innovation for the global trading community.

Rapid Addition at the Core of Transformation

ATR connects more than 1,000 buy-side firms to over 600 brokers, handling over 4 billion shares each day via the FIX protocol. To enable end-to-end modernisation of ATR without disrupting critical trading flow, LSEG selected Rapid Addition’s platform as the foundational technology.

Rapid Addition’s FIX capabilities and flexible workflow platform were instrumental in re-architecting ATR for the cloud. RA Platform enabled ATR to run natively in Azure, while enhancing the performance and always-on reliability demanded by institutional markets.

Proving Scalability Under Real-World Stress

Just weeks after going live, the re-platformed ATR faced its first major test: a 400% surge in trading volumes during a period of high market volatility earlier this year. Thanks to Rapid Addition’s high-performance software platform and Microsoft Azure’s elasticity, ATR processed the spike seamlessly, with zero outages or disruptions.

RA Platform’s proven scalability and real-time observability tools were central to managing the volume surge, providing confidence in the ability to handle future volatility and peak trading days.

Faster Market Expansion and Innovation

By combining Azure’s global cloud infrastructure with Rapid Addition’s modular, open architecture, LSEG can now spin up new FIX hubs in weeks rather than months. A recent example saw ATR establish a new hub in Singapore in just four weeks, accelerating time to market and reducing costs.

RA Platform’s flexibility also positions LSEG to unlock future opportunities: faster client onboarding, customizable routing workflows and richer analytics from the billions of daily messages flowing through ATR.

A Blueprint for Industry Modernisation

Capital markets firms around the globe face the same challenges that LSEG has overcome: growing data volumes, monolithic legacy platforms, escalating infrastructure costs and pressure to meet client and regulatory demands. Rapid Addition’s role in the ATR migration demonstrates how these barriers can be surmounted with the right technology partnership.