EA: Application Architecture

An OASIS specification that proposes a standard set of SOAP extensions that can be used when building secure Web services to implement message content integrity and confidentiality.

An OASIS specification that defines mechanisms to allow different security realms to federate, such that authorized access to resources managed in one realm can be provided to security principles whose identities and attributes are managed in other realms. This includes mechanisms for brokering of identity, attribute, authentication and authorization assertions between realms, and privacy of federated claims.

An XML format for describing network services as a set of endpoints operating on messages containing either document-oriented or procedure-oriented information. The operations and messages are described abstractly, and then bound to a concrete network protocol and message format to define an endpoint.

A software service used to communication between two devices on a network. More specifically, a Web service is a software application with a standardized way of providing interoperability between disparate applications. It does so over HTTP using technologies such as XML, SOAP, WSDL, and UDDI.

Undue burden means significant and unreasonable difficulty or expense. In determining whether an action would result in an undue burden, an agency shall consider all agency resources available to the program or component for which the covered technology is being developed, procured, maintained, or used.

Support the balance and allocation of memory, usage, disk space and performance on computers and their applications.

Modular, swappable functions, separate from, yet connected to an application via well-defined interfaces to provide agility. Often referred to as 'services' they: Perform granular business functions such as "get customer address" or larger ones such as 'process payment.' Are loosely coupled to a new or existing application. Have capability to perform the steps, tasks and activities of one or more business processes. Can be combined to perform a set of functions - referred to as 'orchestration.'

Shared, common infrastructure for lifecycle management such as a services registry, policies, business analytics; routing/addressing, quality of service, communication; Development Tools for security, management, and adapters.

A protocol for implementing Web Services. SOAP features guidelines that allow communication via the Internet between two programs, even if they run on different platforms, use different technologies and are written in different programming languages.

A service-oriented architecture design principle for creating services that can be used for business purposes beyond those initially specified in requirements. Reusable services are designed so their solution logic is independent of any particular business process or technology.