Within this article a process model is derived that considers challenges concerned with short term booking of customized products on online market places. The process model enables customers to compare between different suppliers nonbinding and quickly. Feasibility of orders is ensured by integrating a load-dependent scheduling approach into the booking process. In order to consider uncertainties connected with production to specification, the derived process model allows online booking with

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... help of free available (ad hoc) capacities as well as already reserved capacities. Reservations enable suppliers to adapt capacities more suited to demands, whereas recurring customers benefit from reduced uncertainties about available capacities. At the same time both parties are facing more complex decisions. Within literature these decisions are predominantly considered for single companies that are able to analyze huge amounts of data. Proceeding emergence of online markets with access to all kind of participants requires however decision support for suppliers and customers which is adaptable to individual needs and resources. The article highlights important decisions within the described booking process and gives an outlook how customers and suppliers can set up individual decision support systems that help identifying potentials and implementing advantageous actions quickly. The approach is applicable for customers and suppliers within decentralized companies as well as between different companies and individuals. Index Terms-Customized products, online market place, short term booking, reservations.