Data processing using Web Processing Service orchestration within a Spatial Data Infrastructure

* Corresponding author. This is useful to know for communication with the appropriate person in cases with more than one author. Abstract – Standardised web services are the backbone of the ELVIS system, the EnvironmentaL Visualisation and Information System supporting Vietnamese stake holders in the fields of water related management processes based on open source technologies. They support distributed and loosely coupled, component based architecture of the system. In cooperating OGC compliant web services for data access, visualisation and data processing the system is extendible to external data resources and other proprietary software solutions. The base idea behind the architecture is the orchestration of decoupled web resources representing data sets and functionality to model more complex business processes. The system covers most aspects of administrative business processes including spatial and non-spatial data ingestion and dissemination, necessary data processing and visualisation techniques. In combination with a semantics enabled data management ELVIS is capable to produce value added information products to water management related tasks.