The platform will apply structured data and algorithmic trading to Follow Line placements, allowing insurers to digitally articulate and deploy underwriting appetite.
Aon said the system is designed to reduce friction across the placement lifecycle and deliver more predictable outcomes for brokers and clients.
Aon DPX is scheduled to go live for US property risks in the second half of 2026, with more than a dozen insurers expected to participate at launch.
"The way Follow Line business has been placed has not kept pace with the scale and complexity of today's risks," said Joe Peiser (pictured above), chief executive of risk capital at Aon.
He said the platform introduces a more data-driven approach to connecting risk and capital, with the aim of giving clients greater clarity, choice and control.
Follow Line business has traditionally relied on manual, repetitive processes across distribution and underwriting. Aon said DPX shifts that model by letting insurers define appetite digitally, giving brokers faster access to Follow Line capacity once Lead terms are agreed.
The launch lands as automated follow placements move from emerging concept to a material feature of London Market strategy. Industry consultant McDonnell estimates "up to 50%" of slips in some lines are now placed via facilities or automated follow, with Marsh and Aon among the brokers leading the way, up from the 30% to 40% range cited just 18 months earlier.
Clyde Bernstein, global lead of Aon Broker Copilot and Aon DPX, said the platform "offers a progressive way for insurers to retain control of their view of risk and underwriting strategy while delivering a fast and sustainable model for the deployment of capital".
The exchange runs on Aon-designed logic and configurable parameters that let insurers express their view of risk digitally.
Carriers retain control over how appetite is defined and deployed, and Aon said it will have no visibility into individual appetite positions.
Aon DPX is expected to plug into Aon Broker Copilot, the firm's integrated placement, analytics and broking technology, embedding digital placement directly into broker workflows.
The platform is positioned as part of Aon's 3x3 plan and builds on the firm's $1 billion investment in integrated data, analytics and technology, including its Risk Analyzers, Diagnostic tools, Broker Copilot and Claims Copilot.
