I read a wonderful article the other day that surrounded some specific techniques for portfolio management.
Here’s a link to the article: http://www.infoq.com/articles/visual-portfolio-management
I immediately thought of the SAFe guidance for portfolios and just really enjoyed the simplicity and practicality of the approaches in the article.
For example, the article diagram illustrates visually how an organization is moving portfolio items from Idea…to Live or “Cash”. Clearly it’s a Kanban approach, but I don’t believe there is exhaustive analysis (business cases, etc.) for each idea. The board simply radiates the portfolio and each item moves forward based on (1) it’s on merit and (2) the organization determining that it has value.