An exemplary data center interface for distributing and monitoring Web applications includes a specification that specifies a call statement to distribute one or more components of a Web application to one or more data centers and a call statement to report metrics associated with performance of the Web application. An exemplary data center interface for associating advertisements with distributed Web applications includes a specification that specifies a call statement and one or more call statement parameters to associate an advertisement with one or more distributed Web applications based on at least one criterion. Various other devices, systems and methods are also described.