Insurance company Esure is outsourcing its IT infrastructure to Capgemini in a deal worth £26m.
The outsourcing giant will manage the majority of esure's IT infrastructure for the next five years.
IT has been deployed by Capgemini following Esure's management buy-out in February from Lloyds Banking Group, its previous IT support provider.
Greg Hyttenrauch, chief executive of UK outsourcing at Capgemini, said, "As a web-based business Esure needs excellent IT support 24/7."
The infrastructure managed by Capgemini will run all Esure's core applications, including its finance systems and customer-facing processes. Capgemini is also managing Esure's telephony systems.
The decision to sign Capgemini was based on its ability to deliver on previous outsourcing contracts, said Peter Wood, chairman and founder of Esure.
Capgemini recently reported an increase in profits in the first half of the year of more than 20% to €101m compared with the same period last year.
The supplier also signed contracts with Royal Mail and TheTrainline.com last week.