CASE STUDY

Industry: Real Estate
Client: Office of Single Family Housing in HUD
Service Offering: Service-Oriented Architecture (SOA) Planning, Design, and Migration Services

SOA and Web Services technologies can provide powerful tools and capabilities to effect migration towards an Enterprise Architecture (EA). IES led the first effort at HUD to develop and apply a new methodology for designing its first SOA-based replacement to one of Single Family Housing's many legacy systems. IES led the development of a target EA for Single Family Housing that was compliant with the HUD Vision 2010 EA for the Department. The design for the pilot system was to replace a legacy web application with a new portal that leveraged mainframe assets exposed as Web Services. New methodologies and modeling artifacts were developed for the effort. The designed business logic was based on a series of Business Process Execution Language (BPEL) processes running in essentially an Enterprise Service Bus (ESB) configuration on the Oracle SOA Suite. (The Oracle SOA Suite was based on the Oracle Appliation Server as the J2EE platform.) The use of system adapters was explicitly incorporated into the design to provide an abstraction layer for system integration, providing an example of how Web Services can directly support EA migration. In addition, IES provided Project Management Support Office (PMSO) services, managing the coordination of multiple contractors and integration of multiple supporting efforts. IES also provided support for preparation of internal artifacts to support the approval and acquisition of needed components, including the OMB 300 for the effort.