The service - a network protected by multiple firewalls - sits between Lloyds' own network (LIN) and the Internet.
The hosting service allows customers to develop their own business applications and manage their own Web sites in a buffer zone.
"By offering a buffered zone between the LIN and the Internet a high degree of protection can be given against unwanted access or even attack," said Brian Potter, manager for infrastructure services at Lloyds.
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Users can access the service globally through secure Web sites as well as exchange sensitive data across the Internet using either user ID and password identification or SecureID token authentication.