ARCHITECTURAL DESIGN FOR EXPENSE REIMBURSEMENT APPLICATION SOFTWARE

Methods, systems, and apparatus, including computer program products, for implementing a software architecture design for a software application implementing expense reimbursement. The application is structured as multiple process components interacting with each other through service interfaces, and multiple service operations, each being implemented for a respective process component. The process components include an Expense and Reimbursement Management process component, a Due Item Processing process component, a Payment Processing process component, a Payroll Processing process component, and an Accounting process component.