Abstract: An event-driven computer system for simultaneous management and deployment of software onto an application platform comprises one or more computing solutions, the system comprising: a processor for executing computer code and processing information; a memory for storing the computer code and information, the computer code comprising software tools. The software tools comprise: a behavior model editor for constructing a system model that represents the behavior of the application platform; the behavior model editor comprises behavior components, each behavior component representing an aspect of the application platform. The software tools further comprise: a topology model editor for constructing a visual topology model. This topology model editor comprises: a top level of nodes and lower level nodes, and represents a logical topology of the application platform, where each top-level node in the topology model represents at least one computing solution.

Abstract: A method and system for purchasing and authenticating an electronic ticket has a computer for receiving a ticket request from a user system and generating electronic ticket image data including a ticket identifier in response to the request; encrypting the generated electronic ticket image data and sending them to the user system; forwarding the encrypted electronic ticket image data from the user system to an associated user wireless communication terminal; which decrypts the encrypted electronic ticket image data and displays it on the screen of the terminal; and a computer which checks the validity of the ticket by reading the electronic ticket image data displayed on the screen of the terminal.