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Virtual Services Architecture

A look into the service layers within SOA enabled networks
eSigma.com employs a method of provisioning service layers to insulate each layer from the unique operating requirements and related overhead. This allows processes to run more efficiently - maximizing throughput and limiting unnecessary bottlenecks throughout the network. The primary service layers that eSigma utilizes when architecting a virtual service integration platform are illustrated below.



Client Services Access Layer (C.S.A.L.) The array of devices that consumers request information and services from requires businesses to provide multi-channel connectivity policies. The cost of supporting new channels often requires significant capital and human resources. Today, sellers of products and services are providing low cost integration technologies, like Web Services, that reduce the cost of collaboration. eSigma provides I.A.P.'s (Infrastructure Access Points) that provide a standardized means of connectivity. We are able to increase the adoption rate for services, by creating layers of abstraction that enable organizations to subscribe and reach trading partners when and where your business requires. Business Services Access Layer (B.S.A.L.) eSigma delivers functional business services, application- or machine-based, to systems for execution and consumption. We are able to provide core business processes and the development tools intended to bridge the gap between heterogeneous systems. The BSAL takes core business processes and allows organizations to extend them to meet the requirements defined by the relationship. The advancement of XML development tools, and Web Service Models, provide an effective means of process collaboration that reaches beyond the transactional model. eSigma is able to extend functional legacy systems so that they can be leveraged across internet-based devices.	Information Services Access Layer (I.S.A.L.) The I.S.A.L. provides data access and transformation technologies to subscribers. eSigma supports multiple data access models to include information bus and data object mapping models. Our componentized architecture allows organizations to execute business processes from one layer and send functional acknowledgements to others. We allow organizations to maintain their applications locally, and provide service alerts that enable collaboration. Network Services Access Layer (N.S.A.L.) The complexities of running application and integration services over public networks requires different levels of network technology working together to deliver real or event-based delivery of information. The N.S.A.L. optimizes the different layers of the OSI reference model, creating layers of abstraction that enable the dynamics of conducting business in a networked economy. eSigma provides a highly scalable and secure means of establishing connectivity. The advancement of Internet protocols that deliver presentation layer integration capabilities are routed and mapped to the appropriate request for delivery and execution.