15. The computer-based system of claim 14 , wherein the User Interface is graphical and comprises any combination of: a Discovery Pane for displaying selectable discovered and filtered services; a Details Pane for displaying additional information of a selected service from the Discovery Pane; a Composition Pane for displaying listings of compatible services, according to the filtering, from the Discovery Pane; a Construction Pane for interactively specifying a workflow composition of selected compatible services as the task; an Information Pane for displaying status information; a Save Pane for saving a composition of services; wherein the User Interface displays all or a subset of the panes simultaneously to the user, and wherein the User Interface real-time updates information in each pane according to a result of an action in another pane.
15. The computer-based system of claim 14 , wherein the User Interface is graphical and comprises any combination of: a Discovery Pane for displaying selectable discovered and filtered services; a Details Pane for displaying additional information of a selected service from the Discovery Pane; a Composition Pane for displaying listings of compatible services, according to the filtering, from the Discovery Pane; a Construction Pane for interactively specifying a workflow composition of selected compatible services as the task; an Information Pane for displaying status information; a Save Pane for saving a composition of services; wherein the User Interface displays all or a subset of the panes simultaneously to the user, and wherein the User Interface real-time updates information in each pane according to a result of an action in another pane. 20. The computer-based system of claim 15 , wherein a saved composition of services as the task is extendable with other available discovered and filtered services.