That is because it does not include twoLevel 2 process areas, which cover essential best practices for project implementation.
这是由于它没有包括2级的两个过程领域,而它们包含了项目实现中基本的最佳实践。
2
In the example of the nested, two-level embedding approach, you can embed the top-down approach within the bottom-up approach (see Figure 4) or the other way around.