明确业务背景、业务范围、基本业务逻辑和业务框架，期望读者包括：项目发起人、最 终用户、项目投资方、项目管理团队、项目执行团队，以及其他项目干系人。-A clear business background, business scope, the basic business logic and business fr a meworks, hope that readers, including: project sponsor, end-user, project investors, P