In addition to the Admiral brand, the Admiral Group also owns Bell, Diamond and Elephant.co.uk.
Sword Ciboodle has been selected to improve the company's existing customer service agent systems with the key goal being to reduce the number of screens and steps needed to carry out customer requests.
Its software will be rolled out across Admiral's contact centres in Swansea and Cardiff, encompassing approximately 2,500 agents.
The first phase will see the software being used to address Admiral's payment updates and improve the efficiency of the handling of changes to credit card and banking details.
Steve Webster, IT director at Admiral Group, said: "[A] key reason we selected Sword Ciboodle was that it gives us the flexibility we are looking for in being able to incrementally apply it across the business, without being forced into an all or nothing approach as we would be with a traditional CRM package."
Admiral has outsourced a number of IT projects to The Sword Group's professional services division, which has been noted as a factor in the Sword Ciboodle win.
Kenny Bain, CEO of Sword Ciboodle UK, said: "We are delighted to have secured Admiral, another major insurance firm, which boosts our growing presence in the insurance sector.
"It is very encouraging to see that this success is linked in part to the prior success of another Sword Group product."