Willis passed its first risk through the Kinnect Platform today.
Kinnect is funded by Lloyd's to provide technology and supporting services that enable brokers and underwriters to exchange data electronically.
Willis is one of six initial customers that are set to use the Kinnect Platform.
Kinnect chief executive Ashok Gupta said: "This is a defining moment for Kinnect. Everything we've done over the last two years has been laying the foundations for the first risk to be placed using our platform. Our thanks go to the Willis team for all their help and support this year.
"This is a big step towards our goal - for Kinnect to be adopted across the insurance industry, bringing improved efficiency and reducing errors by cutting out the endless re-keying of data from one system into another."
Willis chairman and chief executive Joe Plumeri said:
"We're delighted to be the first users of the Kinnect Platform. Willis is determined to play a leading role in the use of new technology to improve the efficiency and service of the insurance industry. By working with Kinnect we can help to accomplish that.
"Kinnect enables us to send risk data to a wide range of underwriters, and for the market to respond quickly and efficiently to bind that risk. That can only be good for our clients and good for the industry as a whole."