Each of the big banks' systems continued to add functionality over a long period of time, resulting in a bloated expansion of each application. Each feature is closer together, and even a small fix has a wider scope of influence for each feature, and the size of the fix is so great that it takes time to fix it. In order to completely reinvent the system that had been complicated by repeated additional development, it is necessary to have a high knowledge and know-how in banking

It is the world's largest system development, and in thousands of projects involving human resources, not only knowledgeable experts, but also inexperienced developers and multi-country human resources are working together. We are moving toward the end of the project and the number of people is decreasing, but the achievements of our work to date and our extensive knowledge have earned our members a reputation for being "embarrassed to leave the project", which is the greatest result that leads to the next project. In addition, while taking charge of this long-term project, we have steadily built relationships of trust through various experiences, such as new development methods and coordination work across vendors. We believe that we have the opportunity to inherit this experience and know-how and to be involved in important projects in the future as experts.