Occam will provide Kia's marketing team with in-house access to day-to-day customer and prospect data so that it can develop more targeted and informed customer communications.
Occam claims its technology will provide a single customer view and allow Kia's marketing team to work more closely with its database.
Previously, the data was processed and analysed remotely by incumbent database provider MRM.
James Bagan, managing director at Occam, said: "In a tough economic climate, knowing who your customers are and how they interact with your brand is essential -- we look forward to ensuring Kia is empowered to do this -- and in time, a lot more."
John Bache, customer database manager at Kia, said: "Occam understands our business, the challenges we face and what we need to know about our customers in order to ensure we keep them, and of course, acquire new ones."
Occam was established in 1993 and is headquartered in Bath. Its clients include Eurostar, Airmiles, British Gas, Axa Sun Life, Nationwide Building Society, The Army, Age Concern, Amnesty International and WWF.