Abstract: Provided is a system for reserving a venue for a calendar event. The system may comprise a processor and a database. The processor may be configured to receive an invitation to the calendar event from an event organizer, gather data about the event, and define event requirements based on the data. Based on the event requirements and a permission of the organizer, the processor determines suitable venues. The suitable venues are ranked based on information on the organizer, invitees, event data, and venue data, and optimal venues are identified. A predefined number of optimal venues is sent to the organizer. The organizer selects a venue from the presented options and provides payment information. The processor reserves the selected venue and collects a payment using the payment information. The database stores at least available venues, the data about the calendar event, event requirements, suitable venues, optimal venues, and the selected venue.