A system for providing client services with the assistance of a single source includes a distributed Internet application (DIA) maintained by an assisting party. A computer system is provided for accessing the DIA by a user. The DIA includes a presentation tier, an integration tier and a business tier. An application server couples the integration tier and the presentation tier to determine task sequencing in the presentation tier. A plurality of business units of the assisting party are provided in the business tier, the business units being accessible through the integration tier.