According to one exemplary embodiment, a system for processing transactions is provided that comprises a transaction processing circuit configured to receive transaction data relating to one or more transactions for the purchase of software applications from a digital application store. The transaction processing circuit is further configured to apply one or more business rules to the transaction data and to generate one or more transaction summary files. The transaction summary files are transmitted to a payment system configured to perform, based on the transaction summary files, at least one of recording revenue related to the transactions and causing payment to be distributed to developers of the software applications. At least a portion of the transaction processing circuit is implemented using a shared, scalable computing system. A level of resources of the shared, scalable computing system requested for implementation of the transaction processing circuit is varied based on a volume of transactions processed by the transaction processing system.