Within the area of data transfer and messaging over the world wide web, there coexists a growing number of protocols that fulfill different tasks, however an accepted standard for all tasks does not exist. For applications in areas like e-procurement, this becomes an even more challenging problem, as they are confronted with rapidly changing technology standards as well as with changing messaging requirements. To overcome this problem, we present a reconfigurable architecture that not only allows to exchange protocols according to future needs of web-based e-commerce systems, but also allows to specify for each individual task, which protocol of a given protocol stack shall be used to fulfill this specific task. Thereby, our architecture allows for an individual mapping of tasks to protocols or even protocol-independent software-components that are most appropriate to fulfill these tasks. This results in a highly reconfigurable stack of task-oriented modules where modules can be exchanged, removed, and integrated easily and independently. Therefore, we consider our architecture to be a significant step towards a reconfigurable software architecture for web-based e-commerce systems that can easily be adapted to both, currently unknown future application needs and future software components.