23. The method of claim 18 wherein the third document comprises one or more interface control document and one or more application model documents each having one or more sequence diagrams related to the previously developed one or more applications.
18. A method of managing application development, comprising: maintaining, in a first document, a first list of interactions between a plurality of applications; maintaining, in a second document, a second list of interactions within one or more of the plurality of applications; maintaining, in a third document, a third list of existing interactions; providing a tool that communicates with the first, the second, and the third documents; using the tool to count a number of business operation points based on the interactions in the first list and the second list, the tool monitors the third list and reduces the count for interactions in the first list and the second list having associated existing interactions in the third list, wherein the first list of interactions and the second list of interactions include a plurality of types of interactions, the plurality of types of interactions includes two or more of group consisting of internal logical files types of interactions, external interfaces files types of interactions, external inputs types of interactions, external outputs types of interactions, and external queries types of interactions, and wherein the business operation points include interactions between applications and interactions within an application between components of the application, but do not include the components of the applications themselves or interactions with external non-application entities; measuring hours expended developing the application; calculating a productivity metric for developing the application based on a count of business operation points delivered by an outsourcing firm developing the application and the hours expended by the outsourcing firm developing the application; calculating a productivity rate of change based on the productivity metric of the outsourcing firm for developing the one or more applications and a productivity metric of the outsourcing firm for developing a previous one or more applications; and designing incentive packages for the outsourcing firm based on the productivity rate of change.