InfoSum to raise $15.1 million from Upfront Ventures, IA Ventures and strategic investors.

InfoSum, a London, UK-based company working for the development of a data plaform for dataa sharing across organisations, announced the completion of a $15.1 million capital investment round.

The round was led by Upfront Ventures and IA Ventures, and included a number of customers already using InfoSum, such as Ascential, Akamai, Experian, British broadcaster ITV and Xandr (AT&T's adtech business that is now a part of AT&T's WarnerMedia)

At the same time, the company announced that Brian Lesser, the founder and former CEO of Xandr, and previous to that the North American CEO of GroupM -- is joining the company as executive chairman. Lesser had originally led Xandr's investment into InfoSum and had previously been on the board of the startup

InfoSum, founded in 2016 as CognitiveLogic by CEO Nicholas Halstead, has built a way for organizations to share their data with each other without passing it on to each other -- by way of a federated, decentralized architecture that uses mathematical representations to organise, "read" and query the data.

Prior to this round, InfoSum secured $7.9 million from outside investors.