Abstract
Recent tendency in IT-Industry of developing contracted business application software is use of so called "package software", in place of making everything in house. Industry standard estimation method of effort with "package software" is not fully established, compared with "in-house development." Hitachi, Ltd., has specially devised a method to estimate the efforts of software design phase to the test phase, based on customize coding estimation, re-use estimation, and package component related information and now testing the effectiveness. In this paper, we will show this estimation method with "package software."
