Abstract: A Service Oriented Architecture [SOA] gateway is provided which exposes existing databases and business logic as basic W3C based web services. The SOA gateway enables databases and business logic on existing platforms to be accessed easily by known technologies. The SOA gateway runs on existing platforms where critical data and business logic resides. This enables direct access to the data and business logic without the need for additional middleware. Such single tier implementations have fewer points of failure and are thus more reliable than alternative methods. The SOA gateway authenticates users who access data and business logic and utilize the users' own a security context on the existing platform.