1. A method comprising: receiving a deployed computer application to be staged, wherein the deployed computer application comprises a downloaded code package; detecting that the downloaded code package contains one or more items subject to a license agreement; verifying the integrity of the downloaded code package included in the deployed computer application; staging the deployed computer application to provide a staged computer application; monitoring the staged computer application for one or more execution events of the one or more items subject to a license agreement corresponding to the downloaded code package, wherein monitoring is limited to the one or more items subject to a license agreement; and billing a customer according to the one or more execution events of the one or more items subject to a license agreement.