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|Definitionskos:definition||This Engineering Report (ER) describes best practices and results gathered through the work performed in the Exploitation Platforms Earth Observation Clouds (EOC) Thread of OGC Testbed-14 concerning the Application Deployment and Execution Service (ADES) and the Execution Management Service (EMS). Both the ADES and EMS were identified by the European Space Agency (ESA), beforehand, as essential elements of a Thematic Exploitation Platform (TEP).In the context of a generic Earth Observation Exploitation Platform ecosystem, populated by TEPs and Mission Exploitation Platforms (MEPs), which make use of cloud computing resources for Earth Observation data processing, ESA has established two fundamental building blocks within a TEP, with different functions, the ADES and the EMS. Users interact with a TEP using a Web Client, and the TEP contains a EMS and a ADES. The EMS includes most of the control logic, required for deploying and executing applications in different MEPs and TEPs, the chaining thereof, and the overall coherence of the execution chain (e.g. gathering all outputs and enabling their presentation to the user by a client sensibly). The ADES instead is responsible for the single application deployment and execution on a specific platform. Therefore, it is expected that there are ADES instances both in a TEP and in the individual MEPs.The Testbed-14 Participants have experimented with different options for what concerns the functionality allocated to each of the two components, the information required by each of them and the interface requirements between them in order to produce a consistent chain, compliant with ESAs objectives (as the Sponsor). This report describes these experiments, providing their results and suggesting best practices on how the two services should be engineered in the Exploitation Platform context.The OGC Web Processing Service (WPS) 2.0 standard is of particular relevance given that it is well-established in the OGC Web Service context, specifically that concerning processing, its interoperability value has been clearly demonstrated, and it therefore provides a useful mechanism for standardizing interfaces between components of heterogeneous provenance and implementation.|
|labellabel||OGC Testbed-14: ADES & EMS Results and Best Practices Engineering Report|
|Alternative LabelaltLabel||ADES & EMS Results and Best Practices Engineering Report|
|OGC document typedoctype||Public Engineering Report|