A better option is to run 23:55x7, if you run 24x7 you'll create a giant session log that will be difficult to archive later. Aside from calling a process as a web service, or using the command line to start a process, you have to have a process running that 'listens' for the event, whether it's a file drop, email, 3rd party DB update or work queue item. There are a number of design patterns to try, so maybe work with the Lead Dev in your organisation to try different ideas. Alternatively try your delivery partner company or your BP representative.