确定开发 IT 功能的方法和设备，并选择最合适的方法和工具。从成本效益、开发价值等方面分析各种工具和方法的优劣。 Identifying approaches and equipment for developing the IT function and choosing the most appropriate approach and tools. Analyze the pros and cons of various tools and methods on the basis of their cost effectiveness, development value, etc.