The eight step method describes a process with 8 activities, all using the verb noun notion. The front-end is very clearly described. The separation between requirements and goals may be fuzzy for a few criteria, but they are included in one of the two ways. The selection process is described in many detailed activities and the evaluation is linked to many possible tools and techniques.The last step is a review of the results, whether they fulfill the problem statetement. The linked decisions tools and the description is short and meaningful.
Implementation and feedback steps are completely missing in this process. The process is very complete in the front-end part of the process, but the decision execution is completely missing.
More information about different decision making processes: List of all reviewed decision-making processes. See the comparison of the optional decision-making methods for further study.
Here is a link to the book Guidebook to Decision-Making Methods from Baker et al., which describes this eight step process in more detail:
GUIDEBOOK TO DECISION-MAKING METHODS